Tickets definitely can be gotten for very little on the Slack Market. But part of the idea is to support the program. Having said that, I'll easily agree that shouldn't ONLY be the idea, and many years the school doesn't seem to deserve the support.
But think of it as an investment... that the long awaited breakthru year will come (someday) and then the tickets thereafter will be in demand suddenly, but you'll have inside track to retain your good seats. Or a wager of sorts... the same thing above happens, but you don't actually care as much about going, BUT you can s suddenly sell those seats for big $ and cash in.
More sentimentality also to have the consistency of the same seats around the same folks (I guess you don't like your seatmates? Or vice versa?). In our section we never knew each other in year one, were seated together randomly, could certainly move (and some have, moving up to the club over the years). But the core of us have stayed in the same seats 17 years (yikes) now, and it's like we're kinda family at this point. Tailgate or meet up at restaurants ahead of games and after. Some of us now go to hoops games together too.
I guess my point is that you might not get a winner every year (or maybe any years) and maybe it's possible to save a few bucks some years vs others but is it worth breaking up the family...