Hey you know why lingeries are sexy? They conceal the important bits. Hiding those parts looks more erotic than just going commando. Also porn is for fapping and ecchi is for relaxation/chilling.In answer to the users asking why some people read ecchi instead of pure porn, when someone is still a virgin into adulthood and grew up without much access to hardcore pornography, it's common for them to develop a fetish for much tamer sexual content. It's talked about in the documentary "Shy Guys IRL".