This is mentioned every time I post a picture of one of my bikes!
For me if the saddle is horizontal it hurts my gentleman area. So I have it in this position. The bike was built as a retro bike for trail centres, hence the seatpost.
The pictures were taken the night before I rode it for the first time, I built for riding not for looking at! :p
Alternatively, the saddle is angled like that because otherwise it gets in the way of my massive balls
The white Orange and red Cinder Cone I really like this month.
Seatposts have angle adjustment on them for the purpose of adjusting the angle of the seat to the riders preference. If thats how you like to have your seat setup then thats up to you, and if its for a legitimate medical reason like massive gonads then thats fine too and probably worthy of a channel 5 documentry.
Cheers for picking out my Orange from this months line up, it looks quite ordinary compared to some of the offerings.