Oh, it was not the sixth doctor, that made me quit. The quality of the scripts went straight downward long before his time. And with all the negative I've heard about 6, I actually enjoyed him. I also enjoyed McCoy but - as said - the scripts were too weak. I think there just three serials left I haven't watched (except for the missing, I'm not so much into the reconstructions, lol).
As for the soap-opera: yeah, that's as you say. That's a general trend unfortunately: rebooting old stuff and then plaster some kind of "character drama" over it and make it serious and dark too. Yawn. I enjoyed the 9th and 10h doctor very much, Russel T. Davis' doctors were fun to watch, always a little over the top and some scripts silly, but it was a joy.
Now it's Moffat: everything is complicated because of some major (boring) story arc (without a proper conclusion I may add), dark and the worst is: full of cheesy stereotypes and painful embarrassing jokes about "transsexual horses" etc.