I almost certainly do have depression then. Not the kind where I am suicidal, or lack the ability to get out of bed... but rather, the kind where I would rather not exist because I do not enjoy life.
I struggle very much with meaning, obviously. That's part of this existential crisis... Nothing is meaningful. We are all going to die and I ask what will it mean then? What will some service or app that I made mean when I am dead?
Has anyone yet lived for some purpose, some greater meaning? It appears not, and I am not special.
I personally ask myself that whenever I'm not happy and it usually straightens me out. It's not an easy path but if you want to find meaning in your life, it's a good question to ask.
Most people find meaning through the things they care about which tends to be a small circle of friends and family.
Coming to terms with your death is one thing but coming to terms with the death of everyone you love is another.
In that sense I prefer the idea of make the best out of the limited time you have because it is limited. Once time is limited, your own and that of others, maybe you can find a way to use the little time you have meaningfully.
Think about how you want to die. Do you want to die alone or would you like to die surrounded by people whose lives you made a positive impact on? How do you feel about dying alone and if no one cared whether you lived or died? If you think that no one would care whether you lived or died, you are depressed and should seek help.