I'm not talking about romance, I'm talking about graphic sexual content with minors.
Some minors may fall under the radar but places, like deviantart, do have rules against minors viewing graphic sexual content. I know this because when I was a minor on deviantart, mature content was hidden and couldn't be accessed until I turned 18.

Kissing isn't wrong and love isn't wrong.
But sex and sexual content with minors is against the law. That's to protect the minors.
No one here is trying to make you upset or trying to censor you, personally. The reason for the PG-13 cap is because sex and sexual relations even in role playing is illegal with minors. And considering that this site attracts minors means that Menewsha cannot legally let minors be involved in sexual role plays with adults.

It's all in protection of the younger members. And it is the law of many parts of the world. Menewsha is not above the law. And as I said, I'm glad that the admins care so much about their members, it says a lot about the community to me that they spend time enforcing their rules and filtering out the creeps.