It was okay at first. Didn't mind it in Rumiko Takahashi titles or even the original Dragon Ball. By the late 90's, it was getting nauseating. Golden Boy is something I can tolerate a few episodes of...but the amount of fan service in Trigun, Those Who Hunt Elves (those who hunt Elvis is what I call it), and in 2000's anime is just beyond. These are opinions and if can service is your thing...very well.
Yes, we understand fan service is not just T&A...but that kind of fan service is the most popular. Therefore, it should be understandable why many consider that to be the epitome of fan service.