It probably depends how you view it. I wouldn't say they're worthless. I voted for "Losers" because it's pure hell, believe me, but you can surely be a "winner" in these micro limits and make it out into greater land. People/I have increased BR through them when starting with nothing, because what choice do you have? I think you're in the same situation KingCurtis...and I'm surely not looking to deposit anytime soon. I'm sure sites enjoy making back their free roll winnings easily through rake in these things along with the micro sngos.
If you can deposit maybe $100 or so, the .02/.05 at stars is pretty decent at times for what it is. The .01/.02 are most of the time a craps shoot IMO, but it's to be expected.
My thinking is that Full Tilt likes to think they have a better quality of play coming to their tables and these micros aid in keeping the loose donkey play at other sites such as PS. What one site chooses not to do, another takes advantage of. If they didn't add those micros to their site after the whole poker crisis, I wouldn't expect them to do it anytime soon, that's for sure.