See above for why I'm not a big fan of TOS. It is way too campy for me. I also feel very clearly that's it's an artefact of the sixties--almost all of my television watching is nineties or later. There are just differences in the style of storytelling from earlier eras that I find off-putting.

I think getting sick of Trek will happen less because of a bad season of a show and more because they do tend to recycle story ideas between the series. It's like that on Stargate. After a while, you're like I'VE SEEN THIS EPISODE. YOU'VE DONE IT TWICE ALREADY.