Wow. Seriously, you’re willing to waste a grand (I suspect it’ll be a lot more) on a whim.
Aside from your house you car is the most expensive thing you’ll buy. I certainly wouldn’t buy one off a computer screen.
Depending on your requirements some of us are in a niche of a niche, and there aren't that many options so you have to take what you want. The Tesla may or may not have turned out to be an M3 competitor, but it was the only BEV even in the ball park. It is the -only- car faster than a Luke warm hatch that can tow. For that I would (and do) forgive many foibles.
For others the charging network is the thing - easily doing long trips out weighs any comparison of 9/10 for handling Vs 9.5/10. There are enough online reviews to know that it isn't fundamentally broken, so if that 0.5 isn't the crux for you, or getting a test drive then meh.
Also, slot of people hate that cross shopping thing, fighting over features and penny pinching sales goits.
I'd say try it if you can, but I wouldn't not buy without if you are too far from a showroom/someone with one.
And finally, a grand for a couple of weeks is a little more than the PCP payments if that is how you operate your finances. If you can afford a Tesla, it's probably not the end of the world. Might sting a bit, but it's not going to put you on the streets. If you are stretching your finances, then you are going to be more careful, or more sure.
I'm a use it till it falls apart kind of person, but I do see this as a reasonable way to do things.