If it were opt-in, I would absolutely opt-into it. I want the companies who make products I use/consume to succeed - that's why I never install ad-block. I watch tons of shows on YouTube and niche video sites, and I know the ads are what help these companies stay alive.
While I know installing ad-block is still opt-out (not -in), it's still a choice of a click that I'm making. I want to support you, but I don't want the choice of privacy made for me.