i've never worn Nikes but if I wanted some I'd just buy some. I don't give two fucks about 'supporting' big brands, small brands, real brands, fake brands, known brands, jock brands, etc etc:
I skate for myself
The biggest problem in skateboarding now is people always 'judging' and having an opinion on what YOU do. When I started skating (like many 'slightly' older folk), everyone made fun of me. I still did it though not to fit in, not to be rebellious, but because I just enjoyed going out to an empty parking lot to learn tricks.
Skateboarding (to ME) is all about you and the board. Everything else is just noise.