Even if you wash your hands in the toilet, you have to take it as a given that any door handle you touch in the toilet has just recontaminated you. Open cuts etc are a recipe for disaster. So I carry a bottle of alcohol based handwash in my bag and 2-3 medical grade steri-wipes in my on body kit. I take one out and have it ready BEFORE I enter the toilets.

If I'm not happy with the toilets (poorly maintained or I think that druggies are using them) and I have to use them then I use the medical grade disposable gloves I carry instead.

If I have to defecate then the toilet seat gets a steri-wipe or I use my blow-torch lighter on low to sterilise the surface.

blow-torch lighter?!
I guess a side benefit is you get a preheated seat.

Just make sure to wipe it down before you torch it. The smell of simmering poo is not something you want wafting about in a small, sealed room.

I started those handy wipe deals because so many people are slobs and urinate right in the seat, so I wipe it off if I have to sit down.

Would TSA allow travellers to bring along sanitizers?

You can carry liquid sanitizers on your carry-on luggage as long as it is in a 3 oz. or smaller container and fits in your “liquids and gels” baggie. [citation] (scroll down to “liquid sanitizers”)

alot of guys don't stop to wash because they want to get in and out as fast as possible..

Sometimes you have to wash your hands before. And if you are going to stick your hands back in the reason your hands needed to be washed before, there is no reason to wash after.

No. I don't buy that idea. The guys are just plain lazy by habit.

You know, I can't help but say that we're coming close to obsession here. Absolutely, one should wash one's hands after elimination of bodily waste and before eating. Absolutely one should wipe off a public toilet seat with whatever is available before using the commode (and after, if you please!). But nothing is absolutely clean and microbe-free. Shake hands with someone and you've just undone all your careful sanitation. It's a matter of degree, and time spent worrying about it is time wasted IMHO.