feel like an idiot wrote:
Mine would be buying a home at the peak of the '06 housing bubble. I bought a house that sold for almost $400K, and it was quite tiny (less than 1000 square feet) and old (built in 1960 and needed repairs). Ugh, WTF was I thinking?
As far as running regrets go, it would be not joining my college track team. My 1600 PR was 4:51, and since I went to a D1 school, I automatically thought that I'd have no chance of walking on, so I never bothered to ask. After graduation, I found out that the coach let almost anyone on the team, including the 5:00 milers. The only catch was that they couldn't compete in any meets besides the home meet.
First, I gotta say, many people here have had fantastic lives to have some of the biggest regrets they have. Hopefully it stays that way.
My biggest life regret? Well, in 2011 my dad had cancer that had spread to his brain. Now, I trusted my dad more than anyone in my life. So when he firmly told me he would be alright, I actually trusted him. Too much. One night while I was hanging out with friends he was admitted to the hospital. My mom called me and told me, and said he was talking and such but I should come visit him. I told her I would probably come tomorrow, which I did. However by that point he could no longer talk, and I never spoke to my father again as he died in the early morning hours the next day. I remember vividly going home knowing full well I was leaving my dad to die. It was a heart wrenching ride home that night.
My biggest running regret? Giving up running after high school. I picked the sport back up hard a few years later, but not after gaining about 50-60 lbs. Those years could have been used to really develop my running.