Jobs that require you to travel etc will require you to have a car. Usually this will be stated in the position description / job requirements though... so I would not worry too much 
I think getting your license is important to independence.. rather than having to rely on others for transport. When I got my license, I felt great because I did my 120hrs and it took me around 2 and a half years to do.. since I don't have a large family and with their work etc it was tough to find the time. It's a milestone. Take it one step at a time.
and yes... kebabs and maccas runs. Come on.
First thing I did when I got my P's was a maccas run :') The freedom that having a licence and a car gives you is unbelievable.
I agree with Aaron. When you achieve your 120 hours, it's definitely a milestone. It shows that you've worked hard, and it's a rewarding feeling

The thing about learning to drive is, you're not expected to be a confident driver on your first go. That's why you have a supervising driver there. The first time I drove on my L's, I don't think I went above 60 km/h. My first few hours of experience were made up of ~10 minute drives on quiet streets. You gradually become more confident in your ability, and you become a better driver. When I first got my L's, if you had have told me I'd be able to drive in the city, drive to the airport, and just generally drive in busy traffic or something else, I probably wouldn't have believed you! Now, it's no stress, and I actually really enjoy driving.

Practice makes perfect!
In terms of jobs though, Aaron has it spot on. Employers will usually specify if they require you to have a licence, and otherwise, they don't care how you get to work - as long as you get there, all is well!