I think that with many of us who decorate for Christmas, our tastes are most influenced by what we saw as children. I was born in 1957, so I grew up with incandescent Christmas lights, mostly C7 and C9 bulbs, and the miniature bulbs which came along later.
A few years ago, trying to be "green" and modern, I bought some multicolored LED light strings for the evergreen hedge along my front sidewalk, replacing the multicolored translucent C7 incandescents I'd been using. But right from the start, they seemed cold and not very "Christmas-y". It was several things: the highly-saturated colors, the purple which isn't a traditional Christmas light color, the odd light distribution, and their overall dimness.
I tolerated the LEDs for a couple of years, hoping I'd get used to them, but I finally realized they just weren't going to work. I replaced them with incandescent strings that I custom-configured with alternating clear and transparent red 5W C7 lamps spaced at 12". The difference was amazing - the cheerful, warm and bright Christmas lights that I'd loved since childhood were back!