That's OK, I'm not taking it personally. I think I've explained elsewhere that since at this point in a conversation with a guy, I'm no longer willing to meet him, I don't feel like I need to add to the unread message count in his inbox. He's free to run his business how he likes and I feel like any reply can be misconstrued as a message that he can't.
We also live in the age where people say they do the exact opposite of what they actually do. The only way I can make clear I'm not one of those people is to say nothing. I really have no interest in getting into any kind of back and forth, but my reply invites a response. Then what? With some guys, at some point it's going to be me that stops responding, so why not sooner than later?
Regarding the rest of it, I don't contact someone unless I plan to meet them, my first message includes what I want, and time windows, and an offer for a short phone call if wanted. My RM profile, which does not contain any pics of me, links to my reviews. If the guy is agreeable, he just needs to say when, approximately where, and how much. If the answers are agreeable to me, I confirm. It can be that easy. Trust me when I say, I don't lose any sleep if it doesn't work out.