Along the same lines, why is the inside a better idea? So you don't have to walk outside twice in your lifetime to reset a breaker?
1) The equipment and installation is
far less expensive. In new construction, you stub all the home runs out of the exterior wall, pop out a KO, snap in a bushing and screw your panel in place. 200A, 40 space service = $120
2) With slab constructed, no basement houses, indoor real estate is
much more valuable than outdoor space.
3) If you have a major meltdown in a panel, at least it is outside :thumbup:
Personally, I haven't tripped a breaker in many, many years so walking outside to the panel is a non issue. I also have never experienced having someone (other than POCO :jester

shut off my power.
And, don't get me started on the wet location thing