What a momentous question , but also one maybe not to ask yourself too often . It can send you mad ( oh that's right , we already are) .
I believe I first contemplated this between the ages of 6 and 10 . Still don't have a difinitive answer .
If we look at it without emotion ..our purpose is to extend the species . Just be another number to ensure survival of humans . But we are doing ok in that regard so probably not that vitally important just now . There's been like 108 billion people who have ever lived ( most of them no doubt wondered at some point what their purpose in life was ) of which about seven and a half billion are alive today . The rest is a jumble of opportunities and restrictions which shape your life . I'm happy enough these days to accept there was no important destiny planned in the stars for me . The meaning of life , is life itself . The purpose is to live it , to stay in the game long enough for it to mean something ...to yourself . It's not about your employment , or if you have achieved amazing things . It just is . I sort of am envious of the religious people on that one . Wouldn't it be wonderful if you really believed in a higher power guiding things . The thing is for that to work you have to really believe . I don't . Too much evidence to the contrary for me .
The purpose of life is life itself . The meaning of life is to find peace and to be content . I'm still working on it 👍