It's pretty much the trend to hate on newer kinds of music when you're older.
I'm a young fellow. I don't listen to all new songs out there. But I don't mind some of it. A lot of swearing appears to be casual in pop now, I find it a bit awkward to listen to. I've never been able to get into rap for the same reasons. Swearing in music sticks out like a sore thumb for me and kind of ruins it.
How do you feel about today's music? Are you an old timer who wants to listen to a symphony orchestra on your gramophone or do you want to blast out today's music on your iPod?
As far as swearing in music is concerned, well, it seems to me it's the same as in conversation; that is, if it fits in in a natural, unforced manner, then it's no problem. If it's done way too much and/or done obviously just for shock value, then it's grating to the ear for anyone with good taste. As for so-called rap "music", it is not music at all in my opinion, it is offensive and sometimes simply disgusting. As for pop music in general these days, well, it seems to be a lot more style than substance. I prefer blues and 80's music for the most part.