This is a good point - but states my position quite well. Cash - (well, not "rich" but definitely have more if it than I do time) so it's the chance to save hassle of finding something (hours of trawling eBay) and setting it up correctly. I just want something that I can get to work on when I need it.whilst I understand that many of us are cash rich and time poor, and so there is value in a new machine. Moreover, there will be a warranty!
But, I would always endorse secondhand! These are simple machines, with not a great deal to go wrong; the amount of fettling required of a good secondhand machine can be less than the setup of a new machine.
Of course, if you’re going for top shelf stuff, the saw will be set up by a technician, but that’s another order of magnitude!
There’s loads of saws out there! And do we need another saw in the world?… So picking a lemon needn’t be an issue; my Sedgwick cost me £1500, roughly 1/3 of its cost new. It’s current spec, and was put to work straight away, with only the basic set up checks which you would expect, having moved a machine.
[edit] I do also appreciate the 'does the world need another tablesaw' thought - better for the environment etc to extend the life of something already made rather than paying for something else to be made from scratch!