I've always loved hand to hand martial arts without the aid of equipment, and I like the whole martial arts using your natural energies thing... and that's about it.
DBZ had some interesting characters, but no real story worth discussing. "Oh no! A powerful alien who wants to fight us using martial arts for some reason is going to destroy the world!" Alright, it gets old. Radits... Freeza... Vegeta... Cell (ok he was a robot, big difference). Buu was a big magical glob of goo that also used martial arts for no apparent reason. I think the "cool" factor started to die down after the first SSj, when most of the characters began to get useless and were slowly filtered out of the show. Goku is a horrible character, he's ignorant and stubborn. He always saves the day even though he makes retarded decisions like giving Vegeta and Cell sensu beans... sure, it didn't change things very much, but he just isn't a very bright one. Vegita is smart, but his personality is all over the place. Sometimes he's a coward, like when he cried in movie 8 about Brolli, and sometimes he's stubborn on an equally retarded level (like against Kid buu). Piccolo likes to yell a lot and makes the other characters look bad... Most of them are just empty shells though.
The dragonballs are what really killed the series though. No matter who killed whom or destroyed what, it started all over in the end because somebody wished it so. How boring is that? "Oh my god! He killed Piccolo!" "No not really. They just wished him back." "Oh... damn, can they do that whenever they want?" "Pretty much." I mean it's like playing with gameshark. Look at how they beat Kid Buu.
All in all I'd have to rate Sailor Moon as a higher quality of anime than Dragonball Z and I couldn't even start the 3rd season of that. DBZ lacked sufficient drama and humor to really be considered one of the top animes of all time... even when the good guys got really mad, you couldn't really relate. I mean sure, seeing your bald headed friend get blown up in mid air would piss you off (assuming you weren't charged up with a gameshark called The Eternal Dragon), but it really isn't a very sinister thing to do. Most animes have a way of really drawing the emotion out of you... like... (bad example off the top of my head) that villain from Sailor Moon that fell in love with Molly. What's-his-name. This is really off on a tangent... but... anyone remember that? He and Molly became so close, and at the end he was hunted down by his own kind. Molly had to watch him pass away, as she tugged desperately at the poison vines piercing his chest. He was a villain, and yet he had a heart, and he was willing to sacrifice himself for this seemingly worthless girl. He said his goodbyes and dissapeered, leaving her crushed the viewer in awe. THAT's emotional... not finding the arm-less Gohan laying dead in a puddle of water.
Anyway, I just didn't find it very appealing. It was fun to watch at the time, but I wouldn't sit through that mindlessness again. It was just a big string of overpowered WWF matches.