@balrog - thanks much. I'd read a few things about kegging keeping beer longer, but wasn't sure if it was that much longer to be worth the expense. I wouldn't mind getting into kegging at some point, but since this was my first attempt at brewing, I didn't want to get into all the extra expense.Short answer, it can. There's so much to read about limiting O2 exposure, mainly post boil, and a keg can help. Whether using fermentation gas to purge the keg during fermentation and using "closed transfer" into said keg, or even fermenting and serving in one keg. Anything you do to limit O2 helps.
But it is a DEEP rabbit hole, down which you can go.