Most all of my baby things (plastic pants / onesies / pacifiers / diaper pins) are pink and tend toward the sissy side. This is probably because my earliest diaper-related memories, back in those formative years which probably led to me being as I am today--involved girls.
I lived next door to a girl who peed in her pants and wore diapers to bed at least until we were in third grade (and maybe longer, that's when we moved away). I had a younger girl cousin who were in diapers, it was when I was visiting them at about age five that I peeked inside of her diaper pail and instantly became hooked on the smell of wet cloth diapers.
Then a few years later we lived in a duplex house and the people on the other side had a two year old daughter who always played out back wearing nothing but her diapers, and they were usually drooping and soaked. Sometimes she'd be in training pants and let loose and pee. And in school, over the years, I witnessed several girls having wetting accidents.
When I went through puberty I was friends with a guy across the street whose older sister (who was about eighteen) still wet the bed and one time I was able to sneak down to their basement laundry room and steal her peed-in panties (which I took home and fondled and smelled and over the next week, I think I jerked off enough to cover a hockey rink). Then there was a girl in high school who asked the teacher to be excused, he wouldn't let her, she kept asking, he kept saying 'no' so she finally stood up next to her desk in front of everybody and intentionally soaked herself (I STILL get myself off thinking about that).
So when it comes to ABDL fun, I've always been into girls wearing diapers, wetting themselves, and wetting the bed. Guys' pee does nothing for me, it reminds me of going into a smelly dirty men's room. So that's probably why with my ABDL fun I tend toward the sissy side.