Breadbag ties....been using since I was a kid.....why change????
If you're 100% happy with where you are, no reason to change. I'd never say "oh man, you're missing out, you really need to...whatever."
If you'd like to experiment (not necessarily change, simply experiment) it's interesting and fun.
I never in a million years thought a pick would make as much of a difference in my tone and playing as these Blue Chip picks have - and yeah, I noticed an improvement/difference when I went from celluloid to Ultex, but nothing like this.
The "clack" is gone, but the high end remains. The pick glides through the strings in a different way, and it just feels...faster! Now I play with something else, and it feels clunky and clumsy. It's really weird how quickly one can become acclimated to something as simple as a pick! But of course, that's just my reaction, and you might hate the result.
At some point I'm going to have to record something with the different picks I have on hand, so the difference can be heard, but the feel through the strings is also different for most of these alternatives.
My way of thinking: If I spend a few bucks on even an expensive pick, it's still pretty cheap thrills compared to futzing around with different guitars, amps, cables and pedals. It's kinda fun. The difference is there to be felt and heard, especially by the player who is experienced.