Yes, snooping is worth it. Some of the things I found with the keylogger were painful but at least I had the truth. Fear of the unknown was worse for me than dealing with the the painful reality. Plus I was able to derail some potential hookups when there was still an OM involved. Since I'm in a no fault state not sure how much the info will help me legally though.
ME:47 WAW:45 SON:19 SON:12 M:21 yrs T: 22 yrs BOMB: 3/26/10 EA/PA apr-may 2010 Current: no OM (I think) moved out sept 2010 D filed D w/b final 4/6/2011