(Wasn't there a thread about this previously?)
Depends on what you consider ecchi. Do anime with lots of sex jokes but not too much explicit fanservice count?
Tatami Galaxy didn't come off as an ecchi to me, so it probably just depends on the person.
I don't care much for ecchi these days. Yes, I've watched my share of ecchi. Yes, it has gotten annoying even
when I know what it is. Yes, there are both good and bad ecchi. Off the top of my head, ecchi like
Yusibu and
Mysterious Girlfriend X are really good, while
Eiken and
Aki-Sora are crap (
Eiken was worse even though the incest was the biggest ick factor). Then there were disappointments like
Elfen Lied (personally) and
Futari Ecchi, the latter which I'm kinda not surprised wasn't that good because it was only four episodes of a 40+ currently-publishing manga that mainly shows the growing relationship between a married couple. (Meanwhile, why isn't
Love Lucky getting an anime adaptation? That's a good ecchi story right there.)
I am aware of the market for these shows, so they're going to keep getting made like hentai and thus further be the reason why a lot of our parents look down on anime. (Really, I think a lot of 80s/90s OVA anime were in this category if not out-right hentai. We've all heard the horror stories of parents buying/renting an anime thinking it was a children's cartoon only to return to the store complaining they were given porn.) According to my statistics, I've seen 19 ecchi titles out of all the anime I've seen thus far. I'm not sure if that's even one percent. So I obviously tend to stay away from ecchi titles, unless I know for a fact there is a story to be had. Even though a number of the ecchi I did watch do have a poor or "meh" story, I only watched them because I've heard some people bash them and I wanted to know why, and I happened to feel like hating myself that day. The "meh" ones were more-or-less because I was bored and wanted to watch something only to find myself being bored by it.
So yeah. Depending on the show, they can be basically softcore porn without plot, or softcore porn with plot. And considering ecchi titles like any other anime title are optional, you can watch it or not, and no one will berate nor judge you. They shouldn't, anyway.