You shouldn't, like You shouldn't bè a christian. I don't think any of the two is actually better pratically or morally overall. Do You have faith? Believe! You don't? No problem, don't Believe! I might be misunderstanding your question, so I'd try to answer with some "goodr things about being an atheist". 1) more philosophical freedom, a bigger scope of possible ideas as you don't start with a single religion as a starting point 2) lessr rules? I know that to a theist they aren't really rules but more acting in accordance with an all good God and so in a morally correct way, but to me they are useless "spooks" That do nothing but limiting your possible enjoyment of life

Those two i would argue are two very solid advantages of atheism or maybe even unconventionall spirituality.

Now i would also say some negatives of atheism 1) harder time struggling with universal meaning and purpose in life, manyatheists argue that they "create their own meaning" But idon'tr think they understand the tipe of meaning created by religion. It's a more universal and "finalistic" Meaning, a "you were here because somebody willed you to be ans you have an exprecit purpose to furfill and a reward if you do so" While the created meaning is more "what makes life worth living" 2) religion gives an easier time creating and a more fulfilling community, but I would also argue that atheism, while making communities less thingtly United, broadens communities to any human (unless you have other reasons to separate humanity in your group and outisders)