There can be plenty of meaning in life without worshipping a deity. It’s quite simple really – to love others and to do well by them and by yourself.
Why? Did this type of altruism spring up by magic in our species which also came about by random and chaotic actions? Why, if it is ingrained, is it so often ignored? Why, if we ourselves are products of random action, do we even have the capacity to determine an objective good and not good? Why do we even think at all? And let’s face it, nebulous platitudes like: doing well by ourselves and others: can lead to all sorts of actions that don’t really help us or anybody else.
Why have humans worshipped some kind of deity since the beginning? Why even come up with such a concept? Why do so many hold it, and so few, relatively speaking, hold to your point of view? Why have so many people left testimonies to actual communications with God–even people who before didn’t believe, even quite large groups of people together? We have witnesses, we have communications from God Himself; we even have His own witness to His existence, so really, it is more up to those who ‘disagree’ to point to a proof of his ‘non existence’. You can ‘believe in disbelief’ and even rationalize that you’re ‘the same, or act the same’ as you would as a believer, but that isn’t the point.
Either God exists, or He doesn’t. We have plenty of proof that He does, along with what He wants us to be. . .‘rules’ that are really ways to be most free, ‘actions’ which really DO bring us to fullness of love and care for ourselves and others without exception and without ‘change’.
Living as though God doesn’t exist is neither freeing, loving, or worthwhile in the long run, no matter how ‘nice’ the person himself may be. Without God, he’s like a seed that isn’t planted; all the potential is there, but none of the actuality. He has just as much ‘potential’ as any other seed, but he won’t bring forth fruit until he recognizes God. Those who do recognize God and follow him bring forth ‘good’ fruit’; those who recognize God and don’t follow him bring forth ‘bad’ fruit.
It is just as wrong to bring forth ‘no fruit’ (when one has the potential to bring forth fruit but refuses to do so) as it is to bring forth ‘bad fruit’. So you aren’t doing better by refusing to acknowledge God; you aren’t beating the odds by being ‘spiritual but not religious’ or ‘I can be nice by myself.’