Can't say I like to watch ecchi anime very much (but from time to time), but I'm quite okay with ecchi art.
(Not so that revealing, but which is done artistically)
Yeah, sometimes it annoys when here and there you see anime/scans/manga/ e.g. with the pure fanservice and not a plot,
but if ecchi is to the point in the story, and it's not a bait just to make guys watch it - so why not?
As Akiranyo mentioned, in lots of ecchi anime it's
not really a point to show boobs/ass and so on. It's about how to show the image of a girl (a bit hyperbolical),
which could be full of very positive personal traits and she would be sincere with the guy. You'll never see in
ecchi "bitchy" girls to take over - they are always ' beaten' by simple,cheerful and sincere girls,
which surround the main character.
The reason why I like and tolerate ecchi - I like the beauty of mosty female body. I'm the 'straight'
one, but still, I enjoy the erotical flavours in art, especially in anime. I used to like the guys' one, but now
I'm kinda tired of it, lol. Girl are far more seductive than guys.)
For me ecchi question is like a difference between porn and erotica. If you want go hardcore - go watch porn; if you
want go deep and passionate with a bit of spice - watch erotica. Here's the same with ecchi and hentai. It's
up to choose. I'm not really into hentai, but I'm quite okay with some pieces of attractive and revealing
ecchi art.