What's the point of eating? You're just going to get hungry again.
What's the point of bathing? The filth will inevitably return.
What's the point of anything?
I'm glad you mentioned this.
we'll start with something simple. Take for example, an ice cream cone.
What's the point of eating it if it's just going to be gone in a few minutes?
The point is, you enjoy it while you're eating it, just like life.
Just because something is limited in duration does not make it meaningless or without value.
Enjoy life while it lasts cause' nothing lasts forever.
Think about the future of your life, mind you, to potentially make it more enjoyable, but also enjoy life while you have it, because the future is guaranteed to noone.
That's the thing with people nowadays. They're alwasy "Working for the Weekend" / "Living for the future", etc.
If you don't get some living in now, you may not get that chance in the future. You could have a spontaneous brain aneurism and die instantly or wake up dead tomorrow (little joke there

).
I've recently come to an observation, a sort of epiphany about life in general. Basically, I have found that you either are a happy person, or you aren't. If you rely on other people or other things to make you happy, you will never be happy. It can't be "
If I get that job I will be happy";
"If I acquire that car/tv/game/object/person I will be happy".
Life doesn't work like that. You have to have happiness inside you. If you wait for it to come, or if the feeling is dependent on something or someone else, you are never going to find it. You have to make a concious effort and tell yourself that you are happy or that you will be happy no matter what. If you live your life from this vantage point, I swear life will flow more smoothly and you will feel a greater sense of fulfillment and accomplishment.
It's like if you don't feel like smiling, and you do it anyway, pretty soon you will realize you are smiling, and it's for real. It works the same way. If you say you are happy, pretty soon you realize it's true.
Many people realise this on some level, and I think all children know this innately, the problem is, people seem to forget it, or lose touch with this important life-lesson.
Being "down" is a state of mind. When you learn to control your own state of mind, you don't have to be down ever again. Research has shown that the mere act of pretending you are happy releases dopamines into the blood stream which then cause you to actually be happy. Try it. Next time you feel "down" just pretend you are actually happy, and see what happens.