Totally!
I don't plan to throw away my H and ecchi mangas. I don't think that God would be angry because I just like to look at some drawings which, in the end, are innocent.
Evil has nothing to do with H or ecchi content.
But it's OK for other people to dispose of any kind of material if they feel doing so. But always if it's their decision, not something society forced them upon, or just because that fear of God that always the Church is trying to talk about to their sheeps (at least where I live).