Well then shut up and go do something better.
I'm not sure how to read this as anything but a passive-aggressive complaint that _other_ people aren't doing more about these problems. You try to disqualify yourself from the responsibilities you imply for others, but the fact is we can all be more diligent, if we like, and we can all do work to improve the lives of others.
Guess what? If you _seriously_ try to help other people, as opposed to just posing so, it is really, really hard. There are many excellent reasons for this. Chiefly, people are actually very good problem solvers, and are particularly interested in their own problems. So any one who has a _real_ problem, has a problem that is pretty hard, or they would have already solved it themselves.
For another you have to fight your way through hordes of posers, who want credit for helping but discover that folks have solved all the easy problems on their own. They don't want to do _real_ work, they want to look good, so they chiefly get in the way and muddy the water. And then you discover that "helping people" has become such a poser cottage industry that simply _meaning_ to help counts, and that saying anything remotely unpleasant is cause for ostracism. 'Cause all these folks have to congratulate one another, and tell one another what a difference they're making, which is all kind of difficult if someone is saying "but does this actually work?"
For example, if I explain that it's simpler to tweet a picture than cure diabetes, because tweeting a picture isn't technically that fucking hard but diabetes is a really complicated problem, I'd pop your bubble of woe at how screwed up the world is. The world isn't actually that screwed, and to the extent it is, it has been getting better pretty much daily since 1945. Barring some corners where some major league posers got in charge. If you look at treatment options and outcomes for diabetics I feel pretty sure you'd see a pretty strong and clear progressive improvement. But if the world is getting better then how can you Make A Difference? So what you want to do is complain, and so not having much to complain about is a problem.
If you want a real complaint, go out and try to actually help some people. I guarantee you will very quickly acquire some very real complaints. And that voicing them will get you ostracised by the posers.
So really, the best thing is to shut up and get to work. Failing that, just shutting up is, under these conditions, not a bad second best at all.