I tried a few times, to get into it - collecting heroes I always liked (Aquaman, Hawkman, Teen Titans, Outsiders) - but then DC did "52" (not New 52, but 52 - that one issue each week 52 thing) - and made it such a mess for me to understand, that I only collected Teen Titans after that (which changed from Teen Titans, to Titans, more times than I can count).
I always imagined them being Government sanctioned; or possibly "Secret" government, sent to do odd jobs - and at times, would/could clash with said villains.
Almost like what Suicide Squad is.
With less, "Do it or we blow up your head."