@ayjay I find likes useful just as a measure of if anyone is listening at all, and occasionally I get a like from someone special. But I hate seeing each individual one--just give me a daily report.
Other people's RTs allow me to see posts that I might not otherwise see. My RTs do the same for other people.
I'm with you on follower counts, though. And do they really tell us anything we didn't already know? Lady Gaga has a bazillion Twitter followers, which tells us ... what, precisely? That she's famous. Like we didn't already know that?