How do you deal with the "weight" on your shoulders that you want to help every, single animal?

It kills me to see strays all around me in this small town. There isn't a big enough facility to hold them all, much less adequate help, time, etc. This town has a very high rate of strays plus people "donate" their dog or cat to the pound because they don't want to take care of them anymore for whatever reason. I just don't understand.

I was driving home to lunch today when I stopped to let a black dog cross the "major" road in town. Panting & I'm sure extremely hot I didn't know what to do. Another car stopped for him too.What do you do? I know realistically you cannot help/save every animal species on the plant, even though it's a nice idea. Reallistically, the average person cannot just bring home every stray they encounter. So what do you do?

Any advice?

The insanity!

I just read a post on my Facebook from someone asking for help with their chi-Pom mix. Their neighbor shot her dog with a BB gun because it was barking. WTF is wrong w/ people?! My neighbors blare their music all hours of the day & you don't see me running out shooting anyone - even if it was with just a BB gun.
Now it's stuck in her dog's leg & this lady is going through a divorce without a job, so needless to say, doesn't have the money for an emergency vet visit.
The town police or animal control will not do anything - so people can just shoot animals for the hell of it? Grrr! That just makes me sooo angry!