Hopeful I just want you to know that you are not alone in having feelings like that. I think a lot of us feel like that being WL and not getting an acceptance.
The important thing is the if you do chose to go into another field, just focus on the good things that will make you happy. I thought about being a teacher once and how nice that would be. Summer breaks, no hard tests to take, no stress of medical school and being a doctor. Having the time to enjoy life
Don't feel bad about giving up because it is not giving up if you decide to do something else and succeed at it.
Reapplying is definitely not for everyone. I'm also not reapplying but I have gotten into the Tulane ACP program thanks to someone here who informed me about it. The thought of having to do all that again is just not for me. I don't want to apply to DO schools and I would hate to go to SGU.
If it is an age thing then don't worry. My friend who is 43 just got into UC Davis as a re applicant. So it is never too late!