Natural doesn't mean beautiful

Examples of natural but still gross things:
- pregnancy
- having sex without condoms
- breastfeeding
- sperm
- cleaning own kids with your bare hands (if you know what I mean)
- having to get rid of remains of food and drink
- cleaning after your kid (its barfs, shit, piss, drool)
etc. etc.

This stamp is mainly about humans. Humans aren't beautiful beings. They are disgusting and I am glad I don't think of it everyday. They stink, they are dirty, they are ugly, they are stupid. No wonder why aliens don't visit this planet. I'd be too grossed out to come here.