On my 30th birthday, I left Tina, whose hair was just beginning to grow back from her bone-marrow transplant, at 7:15 in the morning to commute into San Francisco to a job I'd get back from at 6:30 at night. On my 40th birthday, Tina and I went snowboarding in the middle of the week because we can.
I have less money now than I did when I was 30, but I have more fun. No regrets...well, actually, if I never met certain people I ended up in business with I'd be happier, have a more charitable view of human nature, and be significantly richer, against which the added wisdom I gained seems paltry compensation, but for expository purposes: No regrets.
My 50th birthday will be on a Monday. I think Tina and I will go SCUBA diving.