Funny how regret works. Hindsight isn't always 20/20 but it's usually better than foresight. Will those who stood by, watched and made "tch-tch" feel regret? Time will tell. Until that time, do what you feel you must and leave the regretting (or not) for a later time. After all ... some believe that doing something beats doing nothing. Now all you have is intent.
Do those with good intent feel regret? I think that depends on those they were intending to help and whether they're grateful for the effort or not.