I do care about speed and 3D. But I don't think the web needs to be the delivery mechanism for all software. 900 years ago, they compiled Thunderbird once and everybody downloaded and used it. Now, every individual end user compiles gmail on a daily basis. The SaaS model has a lot of advantages. It has disadvantages too. I'm ok with only a subset of all potential programs being viable in a SaaS model.

In particular, I think allowing malicious people to run programs on your computer by default because, hey it's safe in the sandbox, is a terrible idea.