I'd say that "work" generally consists of activities that are only useful as a means, and not as an end. In general, "work" is anything that you'd rather have someone (or something) else do for you.

For example, you don't like cleaning the toilet, but you want the toilet to be clean, so you clean it anyway. Cleaning the toilet is work.

Anything you wouldn't volunteer to do if you weren't getting paid is work.

So, yeah, let's get rid of work!