What about the Million Mile 2UZ Scares you? It's Literally the Best V8 Ever.
Believe it or not, the 2UZ is a *lot* harder to swap than an LS. The physical size alone is a big part of that; the 2UZ is very wide, while an LS can fit where a 4-cylinder sits with little-to-no modification - like a Miata.
I witnessed this in-person on this build. I helped out once or twice. That dude was an engineer though and had a fully-built 2JZ-powered Lexus GS race car right next to the 80 in his garage. Showed me a bent rod out of that 2JZ that still managed to help make 1000HP... Safe to say that his 2UZ swap was an exception.
That, and there are exponentially more perfectly fine LS-based engines out there in junkyards and shop shelves than 2UZs, just waiting to drop into another vehicle. The aftermarket support alone is a HUGE reason to do an LS swap.