I mean, sure, regret might be a bit too daunting at times but people tend to focus on the emotional aspects of regret rather than moving on with life.
It depends on what kind of regret we're talking about here but, the more you live, the more you experience, and the more you experience, the higher the chances of having regretful events and experiences happening around you.
It might be regret because you've done a mistake which could otherwise be handled pretty well, or even missing the chance of talking to a loved one for an indefinite period of time.
These things might hurt depending on the severity of a certain event, but as you go through life like this, you mature as a person, you move on, and make certain amounts of progress. I like to see these mistakes as lessons you will fail to avoid in life, which in turn will also develop your resilience and mindset to face more challenges in life.
You might be more cautious when tackling various problems given to you, or even be more loving and appreciate the little things around you that might not be there forever for you.
Regrets should be fair to have I guess, as it is well, inevitable, and vital for our growth as sensible human beings.
