Comfortable with your own assumptions or not, it's hardly fair to make sweeping statements about peoples' motives for carrying spare tires in certain places...
I am being tongue in cheek and glib for sure, but is it any different than the generalization that a carrier and two gerries is a great idea and best practice that everyone should aspire to?
Look, all I am saying is there is a lot of poser pressure in this regard. There are lots of reasons to do it or not but the point is to think it through. I'm not talking about people that have a SUV or camper and no good interior space for this kind of storage or have a really small OEM space for a tire or need the space for suspension or shock mounts or are running a second fuel tank or any of the many valid reasons.
I am talking about if you have an open truck bed and options for other locations, I am talking about making honest assessments if you really need 33 vs 32 or 37 vs 35 inch or 13.5
inch wide tires to do what you need to. I am talking about paying someone $100 bucks to fab or modify a mount in the OEM location vs $2500 and 300 lbs mounted 4 feet behind the axle.
You seem to feel most people are thinking it through and I don't. Simple disagreement.
As far as most people's motives they are happy to tell you in person or in forum posts they did it to run X size tire most of the time or for looks or both so it's not like it's a huge secret and I am projecting wrong assumptions out into the universe. I don't think it automatically just because it is there it depends on the vehicle and what's going on with it.
My tire size (31x10.50-15) is a factory tire size for a later Ranger and not horribly huge at all, no way it would fit on the stock carrier. If I didn't despise the POS winch things I could easily fab a channel iron crossmember and add a winch carrier... I just don't like them though (although if you keep your eyes open they are kind of like the easter bunny for sprinkling spare tires around the countryside)
LOL. True enough but all the failures I have ever seen were because of corrosion, doubly so if it was a Toyota lol.
Funny aside, Toyota replaced my frame on a 2wd Taco and they replaced everything including brake lines and the rear leafs, except the damn tire carrier. So I had this brand new frame and rusty tire carrier. So I took it apart and cleaned and painted it and lubed up the cable. A month later Toyota decided they would replace the whole carrier too and sent me a letter.