Hello Jay,
Why? Cuz of one 3 letter word: "Sun" When the sun is blazing hot outdoors, I want to be able to run for shelter inside an indoor garage, which helps noticeably. My van is like a greenhouse effect and traps heat for many hours, even though my windows are tinted and shaded.
When my van was stock, the entire height of my van was approx 6'8" high, including the stock luggage racks. When my van was stock, I was able to enter a number of indoor garages, including a garage that had free 90 minute parking for a gym I belong to. But as you know, with my cargo boxes on top of the roof, that increased the entire vehicle height which prevented entry to many places, including mechanic shops I normally used to go to.
That's why I will be taking off the cargo boxes from my rooftop next week. Once done, I should be able to enter indoor garages again, not all, but quite a few I think.
I typically park outdoors anyway, especially away from other cars. But I do miss the option to be able to park indoors if the need arises.