My biggest issue with Obama's Presidency is the perpetual desperate, foaming-at-the-mouth insanity and unfailing unwillingness to cooperate that seems to have possessed the Republicans in Congress ever since they realized the current man in the Oval Office has a slightly different complexion and tows a different party line than his predecessor. I mean, they were bad before, but... not like this.
No, no, conservatives, I kid.

Seriously, though, there are some criticisms that can be made from the left, too-- for example, the way in which the clandestine drone campaigns over Pakistan have been handled, or the way the healthcare "reform" package that finally got pushed through didn't look a thing like Canadian or European-style systems, or the way that Wall Street bankers still haven't been held fully accountable for their part in the housing crisis, or simply the way he seems to let himself be walked on and drowned out by conservatives without fighting back. Let's be realistic, though-- when he campaigned for president, it was pretty obvious he was going to be a conservative Democrat, and he wasn't going to aggravate easily. His conciliatory approach and levelheadedness were two of the big reasons he seemed so appealing to the electorate in 2008 in the first place (well, that, and the other guy was willing to put Mrs. Moose Hunter in his co-pilot seat). If you're disappointed in him, liberals... well... consider the alternative.
And what do we have to show for the presidency of this awful, secretly Muslim, Kenyan autocrat being in power? Private sector job growth has drastically improved since he took office, we've somewhat redeemed ourselves with a significant portion of the international community, we're out of one of the two unpopular theaters of war that his predecessor left him to clean up, the days of "Don't Ask Don't Tell" are over, and our Public Enemy #1 is rotting at the bottom of the Indian Ocean. Doesn't that count for something-- especially when you consider from whom he inherited the job?
I couldn't have said it better.
Though I must disagree with you on one point - Bin Laden more likely than not is fish poop now.