I can only speak for myself.
But while I am careful about germs such as frequent hand washing, I figure there are millions of germs out there airbourne or otherwise that there is no way to reasonably avoid - these are enough to "build up" our immune systems. I try to avoid as much as possible but don't freak out over germs in general because we don't and can't live in a bubble. I can live with the "microscopic" stuff.
But what I do try to avoid with a passion is OTHER people "dirt." That freaks me out more than microscopic "germs." So, I do usually wash the dishes because I eat off it, and the jacuzzi jets if I sit my bare body in the water coming out of it, and I wipe down the toilet seat because I have to sit on it. Oh, and I'm one of "those" that don't like to use the bedspreads. (There was a whole other thread about bedspreads - I "wrap" my blanket in another bedsheet.)
I really haven't wiped down any remotes or door knobs or other surfaces with wipes unless they looked "gross." I have no problem with other people wiping them down and I wouldn't think them strange at all. I would too but I think there is enough for me to do as it is. While there are probably tons of "germs" on those items, I figure frequent hand washing is enough.
Now if I still had a baby that put stuff into her mouth, I would probably wipe down remotes and such. But my kids are older now. Now if I had wipes out for something else and the remote was right there, I would give it a wipe. I figure that maybe some other kid had it in their mouth and I wouldn't want to touch their "spit."
That being said, I usually do ALL this stuff only when we stay for a longer trip and want to settle into our "home." If it is a short trip, I do the bare minimum, such as wash only the dishes we use, wipe down the toilet seat, and rinse out the tub. The jacuzzi jets do NOT get used and we just use it as a regular tub to bathe the girls.
As for being out in public, we don't do anything to disinfect everything, lol! Frequent hand washing and occasional purell are my limits - more to clean off the grime and dirt than for "germs."
To me there is difference between dealing with dirt/germs in public and in private. When "home" I prefer to deal only with the dirt/germs we generate and not other peoples.
First thing we do is wash our hands when we get in the house after taking off shoes at the door. At home, we do take a shower or change our clothes when we get home before settling in. At a hotel, no sitting on the beds unless we are changed or showered - that's what the couch and chairs are for in the living room.
For one night stays in hotels when traveling, aside from wiping down the toilet seat, I don't do much. I just caulk it up to "travel dirt" and just figure on washing everything down when we get to our destination or home.
So, for some fellow "cleanophobics," I might make them cringe, and for others who couldn't care less, I'm still "strange."
I think I have gotten more lax after having kids - how totally "clean" can the house or the kids always be when the kids seem to attract dirt like magnets
On the other hand, my cleanophobic ways seem to have rubbed off on DH. When we went to a church retreat this past May, we had to "rough it" in motel-like rooms in a camplike setting. As long as the bathroom was clean (do you see a theme here?), I just figured on roughing it and feeling "dirty" all weekend. I have to say the rooms were relatively "clean" just worn and old. DH asked my why I didn't pack pillows

- hello? travel light? I just had him wrap his pillow with a clean t-shirt. Maybe he just got spoiled after years of my "cleaning ways."
That's just how I feel about dirt/germs.