See, that's strange... I agree with most things you like, however I also really like carrots. As for salad, I've met a few people so far who really disliked eating salad, but they enjoy the salads I make and eat them happily - odd. Overall though I think I mostly agree with what you're saying.
Celery - it's tasteless, and I don't like the texture. Sometimes works well when cooked.
Peppers - they work very well with other stuff, rubbish on their own though.
Brussel sprouts - add a.. umm, 'different' taste to a plate-full of other stuff, however to be honest they're not that nice. At all.
Cauliflower & broccoli - love it. Sometimes have it raw :-$