I’m not depressed (at the moment, well maybe a little), just feeling philosophical.
Edit: the idea of this came to me because I was pondering why people fight so hard to beat diseases and live a few more years. What are they planning to do? Why exert effort just to be here longer when you don’t have a reason?
Just why?
First of all.
Life has no inherent meaning; there is no grand plan or objective purpose to your life or any other persons.
Thus; what you choose has meaning is objectively meaningful (to you).
On a grander scale. As far as we know currently, we are the only example of advanced intelligence in the universe. We are almost certainly not; but we have no evidence at this stage. This is objectively meaningful; for humanity as a whole, if you choose to participate in ensuring the continuation of the only example of intelligence is totally up to you. As long as some people choose to continue the species intelligence continues in the universe.