I'll answer just because I think my answer will be somewhat different from others and might be interesting.
I was a self-taught software developer from pre-teen years, and one of those annoying people who spent Year 10 - 12 thinking "What do you mean it's really hard figuring out what to do after school? I know exactly what I want to do". I could quite possibly have wrangled a job without a degree, but figured a software engineering degree at Unimelb would be interesting and would make it easier to get a job, so that's what I did. And it worked: I had a part-time software development job from the end of first year, and had accepted a full-time software development job offer before my final semester (at a different company - the company I'm still working at).
I did learn a lot while I was in Uni, and still use some of it today in my work. Some of that learning was in class, but much of it was self-taught. As a teen, I'd read just about every computer related book at my local library, but it wasn't much, and I couldn't usually get exactly what I wanted. The Uni libraries were just so big, and I could get access to so many books on any topic I wanted. In particular, I fell in love with the Engineering library, with its rows and rows of books between Dewey 004 and 006. I spent hours in there, and borrowed heaps of books which formed most of my reading on the train to and from Uni.
One other unexpected thing I found at Uni (which certainly contributed to making it feel worth it) was fellow students who were interested in the same thing as me, and fellow students who were more intelligent than me. I had come from a small school, and was at least arrogant enough to think I was best at most of the things I cared about, but it's really helpful being able to talk with others.
And so I completed Uni. It was a bit sad leaving a place I had happy memories of, but I was busy, I moved onto the next stage of my One True Life Plan, and I'm not sure I really expected to be back. I think I had acquired a respect for the concept of "life-long learning", but didn't feel I would need to return to Uni to achieve that. I was self-taught before Uni, I was partly self-taught during Uni, and I would remain self-taught after Uni. And I haven't gone back as a student, and don't really expect to. But it still became a more important part of my identity than I ever expected.
At the time, I clearly had a very transactional view of Uni. I paid my fees, I got my degree, I got my job. End of story. I didn't really understand the talk of the importance of Alumni involvement, etc. But a few years back I had more time and was feeling less happy with the One True Life Plan I set myself, and that's when I began to reconnect with the Uni and discover I appreciated it far more than I realised. I began going to a few seminars after work that alumni were invited to. I got on more mailing lists and was invited to more events. I realised how beautiful the campus itself was (I think Unimelb Parkville is a really nice campus). I felt like I belonged. I even went along to the Unimelb - USyd Boat Race last year, which I would legit never in a million years have expected to do while narrowly focused on a degree as a springboard to a job.
This shift also came with my shift from software development being a passion to just a job (though there are worse things than a stable and well-paid job). My interests widened significantly, and my job couldn't keep up. As a result, the events I was going to weren't in software, but in areas I probably wouldn't have given the time of day while a student. I've been to events in BioSciences, in Agriculture, and in Space Science. I went to the launch event for a new history curriculum last year. I've dined at University House - a place I didn't even know existed as a student. I was at a release of Eastern Barred Bandicoots at Mount Rothwell just before Grand Final holiday last year, specifically because of my involvement with the university in the last few years.
That path is probably slightly unusual (understatement?), but I've come to learn that a university can mean as much or as little as you want it to. Was my university experience worth it? Clearly yes, whether from a transactional perspective, from meeting new people (only a few of which I'm still in touch with), or from coming to form an unexpected part of my identity.
A degree can open doors, and if you want to be self-directed and self-learning, University lecturers may or may not be able to support you, but it does give you access to a lot of resources that I found harder to get elsewhere. If I were to do it again I might want more breadth and less laser-focus on preparing myself for one vocation, but I can't really fault former-me when I still use that knowledge in that vocation.