It's nice to know that people still appreciate you because of the help that you're willing to give despite of your shortcomings and mistakes...
It's nice to know that you have value and you can still be of use...
It feels nice for people to say thank you...
And it's nice to know that despite you're black past, some people who knew were willing to forget about it and wouldn't think less of you even though you told them the WHOLE naked truth.
The pain is still here, but it feels nice to forget about it even for a few minutes...