Depends on how you look at this. First time when I saw this, it was very funny... especially the last one on the lower right. But then when I read again for the second time, you will feel that in some ways, we are part of these as well isn't it?
Most people loved to complain. Either regarding their lives, their job, their partner, family, pets. If you want, you could literally complain out of every single situation, like the one shown above. But if you think of it another way, most things that we complained, aren't even worth complaining in the first place. We made stuff up for us to complain, hence we're not happy.
If we could focus our energy into something more positive, our lives would be greatly enriched. Think of it, right at this moment, you must have a healthy body and mind, able to breathe normally and read this post. Isn't that enough to be thankful for? There are countless of people in this world currently living at the verge of their live. Some might not even take their next breath of air at all.
Let's learn together to appreciate life's little treasures that we have within us and stop chasing external means for satisfaction or happiness. It should come from within. This, includes me.