[jbri]

What browser are you using, and what websites are you visiting? Because one of the two is the cause of your slowing-to-a-crawl, and if you want to vote with your wallet you should start with that before throwing away the entire web ecosystem.

[PommeDeTerre]

It's not necessarily just one of them that's responsible for the poor performance. It could easily be both. Running bad JavaScript using a bad interpreter leads to awful performance.