There's too much to see, too much to learn, too much to know, and too much to experience to waste a single second caught up in the dogma of another church or religion. Pursue the knowable. Pursue what can actually be established as true. Pursue worthwhile activities that can make THIS world a better place.
There is no shortcut to knowledge. If you want to know what's true you're going to have to get out there and find it. You're going to have to do hard intellectual work.
But it's work that is rewarding and worthwhile and can make you a better person. If you want to be spiritual - if you want to understand your place in the universe - then perhaps the best way for you to do that is by understanding something about the world we live in.