Sure. but....
And this is the problem. I too like the idea of Kwanzaa, but I don't celebrate it either.
I wouldn't celebrate Christmas either if it were not for the fact that everyone else around me celebrates it and that is the power of culture - even one is on the same page despite their personal inclinations. Every year millions of families go into debt to finance the holiday, It does not make sense, and is the function of our market-driven culture.
The "start" of the New Year is completely arbitrary, so who cares? Your new year can be on your birthday -- it is a new year to you -- and you can celebrate it any way you like 🙂