And they're still a pain to spend, because too many people refuse to believe they're real money. Or else don't want to take them because there isn't a slot in their cash drawer. I inherited a couple of bundles from my dad last year (he made $2 bills his "thing", much like Woz, because he enjoyed arguing with cashiers), and exchanged them all at the bank for "real money".
Many years ago a friend of mine used to tip bartenders and servers with dollar coins (a dollar tip on a drink was good at the time). They remembered him for that and he got better service even though it was probably a bit of a PITA for them to deal with the coins. $2 bills could probaby be used in a similar fashion.
They're socially awkward to spend, because people don't want to take them. That was true each of the four or five times I used bills from my father's stash, though I was outright refused only once. Unlike my father, I don't enjoy needlessly provoking minor hostility, so I turned them into the bank. We're all just gabbing on the internet, my dude. You might find $2 bills a fun investment.