Boy or boy....some people are never happy.
In a a perfect, ideal planet earth, there would be no world hunger, no ego, no competition, no greed, no lies, and of course electronics would last forever and they'd be water proof as well.
I see no reason why the manufacturer should go out of their way to implement some waterproofing unless they charge the consumer for it. Accidents will always happen and that's why Apple has gone the extra mile with an precedent warranty: Apple Care Plus. It's more than enough in my opinion. Try getting any warranty done for any reason on a Samsung Galaxy, you'll want to rip someone at Samsung's head off.
If you're careless or accident prone like me, then get a good case and invisible shield or ghost armour skin. I've heard of Lifeproof cases, but I wouldn't trust them because they have a very poor warranty and people have lots of issues with their defective cases. You want your phone to be waterproof? Don't bring into the water, or buy one of those big plastic waterproof cases where you put your phone into. If you're cheap, you can always use a tightly zipped Ziplock bag.