Does size matter?

I've never been one to worry about a man's size.

CD's wasn't huge, in fact I'm pretty sure it was on the small side. Well it was smaller than I'd ever experienced before. It gives me some pleasure in knowing that my next guy is highly likely going to be more blessed in that area but it didn't matter that it was small the sex was still good. In fact he did some awesome things with his hands and mouth. Ok I'm going off point.. Slightly.

I want sex, when I make scenarios in my head the penis is huge. Massive in fact. Unrealistically gigantic penis' enter me.

Size shouldn't matter but why in my sex dreams does it matter. Because it does. It really does.