Regrets

I usually say I have no regrets in life, by which I mean this:

Had otherwise-unfortunate decisions not been made,
other very-fortunate events might not have followed.

Even so, here are a few past decisions I now consider suboptimal:
1) Voting for Jimmy Carter.
2) Not trying for more kids
3) Not trying for a D. Min.
4) Donating to Planned Parenthood
5) Not moving to Chicago sooner

(Your mileage may vary.)