I suspect that I'm really not interested in a deep relationship with a girl, I'm happy to be friends, be friendly nice, would love to have sex with a woman but I don't want to be stressed out by her or have her place demands on me. Is that normal?
Yes, it's very normal.
It's actually more of the norm for a guy, too. Most girls start to dream about first kisses, getting married, and having kids at a very young age. Very, very rarely do little boys ever look forward to this kind of thing! Plus, guys don't like stress and demands like you said and lots of time wives and serious girlfriends are portrayed as being bossy and demanding. So, yes! You are completely normal.