I know what you mean, while I can't say I've experienced it at your level but the brief connection I felt with someone not long ago (first time in 10 years) was great, pretty amazing at times- despite the fact we were two very different people.
It's hard being the one who thinks that things are good but the other person feels differently. I wonder if it's because people are searching for very specific things or wanting/expecting too much from the other as opposed to seeing them as an enhancement? They say we waste time looking for the perfect lover instead of creating the perfect love- I think there's some truth to that.
Me: 35|WAW: 38|D: 6yo | http://tinyurl.com/2dxx7m6 Feb 2006, left, came back in two weeks Aug 2006, left again Apr 2007, filed for divorce Dec 2007, reunited Mar 2010, moved out, filed again