The Thunderbolt

Ok, so I watch Desperate Housewives. Truth be told I watch far too much TV in general. Anyway, I digress. Sunday's episode had Susan and Lynette discussing relationships. Susan is seeing this doctor whom she likes but can't bring herself to say she loves him. He's a great guy, a little cheesy, but certainly loves her. She just doesn't feel the thunderbolt with him. She had the thunderbolt with her ex and with Mike and says it got her into nothing but trouble. So now she's settling so she can have something stable. Of coarse we find out later under the influence of anesthesia that she really does love Mike. Duh. Point being though, do we really have to settle? Can we only have one or the other? I find it hard to believe that I can't have stability and excitement. Proof would be Lynette and her husband. They have a great family, successful careers, and still find time to have sex in an elevator. Going down Mr. Tyler? :)
I'm beginning to think that I'm asking for too much from my relationships. I don't want Mr. Perfect, I'm too far from it to expect that. But are my expectations to high? I've been standing my ground and trying not to settle. My question is do I need to give in a little ?