In my free time I like lazing or dancing, playing computer, doing an English course...
A waste of time is too long warching TV, playing computer, lazing...
I think that watching TV, shopping, cooking and doing housework aren't a waste of time, because this things are a normally, daily things.
I don't spend a lot of time on public transport. I prever riding a bike :)
I think that now, the people have got less free time, because they've got a lot of work.