Maybe San Diego has changed in the past few years. It was 9 years ago I was there and highly dissappointed.
Maybe it was just the streets I walked or the areas we went.
But at night walking down most streets we were hounded by homeless beggars looking for "coffee money". Parked our car to go walk around the beach and when we came back there were two bums standing there washing our window and demanding 5 bucks. and we were not even IN the car!
Just 2 years ago, I pulled off the free way at three different exit ramps. At each one there was at least one bum with a sign asking for change and litter and trash blowing everywhere.
Maybe its changed, or maybe I was just in the wrong area.
Just my opinion tho.
On another note. The absolutely, without a doubt, shittiest place I have ever lived was Okinawa, JA. The entire island is a dumping ground unless you go driving on the north side where it is 99% jungle. Rats run in the streets EVERYWHERE! and they are HUGE! Numerous times, we thought they were cats and dogs.
Many of the bars have dirt floors, piss, shit, everything you can imagine on them.