Simply put the only meaning is to perpetuate the species. Doing your part to create life, then while it's incubating protect the mother and child while pregnant and then through the time when the child strikes out on its own. Between birth and when it leaves the house it is your duty as a progenitor of your bloodline to teach it what it will need to know to go out into the world and make a name for themselves just as you have done. Nothing Less, Nothing More. If female, your job is to be the Mother of your child. Let the father fill his role. While doing this, you also take on a secondary roles and that is his partner. When he is vulnerable and decides to open up to you and tell you his dreams, ideas, fears, your job is to sit the shut the fuck up and listen to him. Do not offer an opinion unless you are asked. If you do not understand something ask him to elaborate politely. Even if what he is saying sounds stupid and childish to you, that's not your place to have input unless asked and do not weaponize anything he has told you to be used later against him. Don't be that cunt. You're there as his partner to love him, encourage him to be the best he can be. You are his shoulder when he feels low. Be there for him. He will be there for you. Lord knows we can be idiotic immature children at times, but remember you chose him and created life with him. You get one chance if he choose s to open up to you. Do not blow it and never shut him down when he's opening up.
the two of you are in a fight to the death against the world. You must at time stand back to back to fight off what is thrown your way. If you say it mean it. This go s both ways as well. The Father is there to be the mothers counterpart. Don't be an asshole to her. Both of you love your child. Guess lwhat. You are God to the child's eyes. That's your roll now. Don't fuck it up. Yeah I am speaking from experience. Two times now.
All else is ridiculous dogma meant to control you as a person.
As always, it all depends on the point of view.
Life, generally speaking, is nothing but a part of nature, a process, which describes one's ability to breathe, move, feed, breed et cetera. Living things are also a part of that very same nature - long story short, the main meaning of life is to preserve your own kind. That's what it was for centuries - every creature is born, grows up and is raised by their predecessor until it can live on it's own, breeds, raises their offspring until the offspring is capable to live on it's own and then fades away, letting their successor take it's place. It is a process we share amongst all kinds of animals, and hasn't still changed to this day, since it's all based around basic rules of nature.
However, as we as a kind developed a society, learnt to farm food, established some common rules, evolved our technology and basically did everything which allowed us to put men as an superior species amongst all others, we no longer need to strive to survive (well, depends, but you all know what i mean :p ). Now our role is no longer restricted to living a life guided by instinct and basic urges.
So, basically, when we talk about "the meaning of life", we mostly mean some kind of an universal rule, idea, value or goal, which our life should be focused around. Yet, when you ask that question you make one major mistake - you assume that life has a meaning; that that one common rule or destination does really exist. Life, itself, wasn't meant to have a meaning other than pure survival. It's us, humans, who came up with that idea. But does that mean the life has no meaning at all? Yes, but also no. It doesn't have a meaning as an common path or goal every human follows, but the very idea of the meaning of life is rather a way to describe one's set of values and ideas, hopes and dreams, goals and purposes. The meaning of life is a term you need to define yourself. That's all there is to it, really. Just be yourself, stick to your ideas, follow your dreams, however trivially it sounds. What you shouldn't do on the other hand, is let others form the meaning of your life. Don't let yourself be manipulated or fooled - nowadays everyone just seems to be trying so hard to place you on their side of their barricade, let it be politics, fashion, eating habits, whatever really. Find your own way or niche and sapere aude, that's everything that there is to life :).
