The difference between this and liking to keep busy is that I feel pleased to have time to sit back and relax. I'm not annoyed that I have nothing to do; I'm annoyed that the "what next?" reflex keeps interrupting my attempts to relax :-)

That said, if I were busier then I suppose this particular irritation wouldn't bother me; but I'm not sure that's quite the same thing as liking it...

Some people can't stand to do nothing - I can't unless I'm actually asleep.