This last weekend we attended ConnectiCon, a con I've personally been attending since '06, and on J has been attending for a couple more years. Since '06, I think I've managed to miss only 1 CTCon, even years we couldn't attend the full weekend, we usually would hit it up for at least one of the days to scope out the dealers room and whatever events we could cram into the day.
This year we did the "Do we go at all? For a day? Two days? For the full three?" dance that happens almost every year and decided at the last minute to go for the full weekend and stay with some friends who's roommates dropped out, and I definitely don't regret the decision.