Sorry, I can't switch to Firefox, as I've never not used Firefox.
I used it already when it was called Netscape. Before that I used Mosaic, which itself is not entirely stranger to Netscape creation.
Also, FF is not "a great alternative to Google Chrome". FF is a great browser in its own right. (Almost) always has been. And how could it be considered an alternative to anything when it was there first (or second, right after Mosaic)?
Nope. I simply refuse to watch ads.
Either the website or their author will have provided the means to support them directly, or I won't. And if they try forcing ads on me, I quit using their website.
I'm fine with spending money to support content or services I appreciate. I refuse to waste a second of my life watching ads. That's the reason why we have not owned a TV since the early 00s: my spouse and I realized we were screwed as, at least here in France, we were supposed to pay for watching TV but still would have to watch ads, more and more of them for that matter. So, gone the TV.