Here's my thought on this kind of stuff- Human often forget that 'meaning' and 'purpose' are concepts MADE by humans. Now, I don't have any psychic power or anything like that, so I can't read the mind of animals, but if you ask me they never seem to worry about the meaning of life, or if there is no meaning for that matter. That's because the idea and concept of meaning is, as far as I know, only shared by humans, and maybe a few sign-language abled apes (sorry, it's just my nature to joke). So if there is no such thing as 'meaning' or 'purpose', well, it's a little tricky to find something that really only exsists in our minds.

Many people find it really concerning that there may be no meaning or purspose to anything we do or to our lives. Myself, I find it quite comforting. It doesn't mean I don't beleive anything will happen after I die, it doesn't mean I don't beleive there's a God or gods... In fact maybe on some level this whole 'meaning' thing is a God-made concept! It doesn't even mean that don't believe perhaps we're all part of one big conciousness experiencing itself subjectively, or that we're all 'energy balls' or anything like that. It just merely means that I think life just 'is'. Obviously we're alive right now, why fret about it? Why fret about why when there is no why?

I hope most of that makes sence