I just don't care...if I like the man, I'm going to like his penis.
Mmmm....
What was I saying again?...
If they are extremely large or extremely small, it can cause a few issues, but it can be worked around. I echo
Dare2Share's comments about giving blow jobs to very large men though...I like to be able to get it all in my mouth. Ditto to the doggy style comment too; this just happened to me this weekend.
Very small ones...well, I've never seen one up close smaller than about four inches (and skinny too),a long time ago. But there are certainly lots of ways to make the experience enjoyable for all.
Peoples' fixation on size, while I understand the reasons for it, is perplexing to me in its sheer intensity. I am fascinated by the differences in cocks...the way they curve, their texture, the way they point, etc. Now that we are swingers, I get to explore more than just one.