I've sent out some icebreakers and these guys just flat out don't respond. They don't close me as a match, but the ignore me. It's messed up.
And btw - you can't take this personally.
I think you have to expect that the majority WON'T respond. The reasons are varied - maybe he just went on a first date the night before with a woman he thinks has potential, maybe you look like his ex, maybe he's looking for someone who has kids or is blond or dances salsa or whatever!
I know that I stopped sending "sorry, no thank you" types of responses, because it just seemed to piss guys off, no matter how nicely I worded it. So even though I thought it was rude to just not respond at all, that's what I do now - just ignore.
Also - I probably wouldn't say all that stuff on your profile about relationship stuff. It's ok to mention what you're looking for in a person, but you don't want to start sounding like you have a lot of baggage, or are bitter. Focus more on your interests and less on potential relationship pitfalls. The best profiles are those of people with a good sense of humor (love the tongue-in-cheek ones) and interesting lives that look like it would be fun to join them!