What keeps you from simply doing what you want to get whatever you want in this life? Why not cheat on your taxes? Why not steal from the grocery store? What motive is there to keep the law? What points your moral compass? What is your standard of what is decent and what is unacceptable?
With no fear of final judgement, why not simply kill someone if they offend you? Or give into any desire regardless of who it hurts? What do atheists use as a definition of good and bad - since they do not believe evil exists?
Is it merely trying to stay out of prison? With no God to tell you what is right and wrong, IS there a right and wrong? Or is it subjective to each individual - one person's "right" is fine for them, while another person's "right" is fine for them? What if these perceived "good things", or "right things" are in conflict with each other?
So are you telling me that the *only* reason you won't go out and murder and eat a human baby is because a God told you not to? That's kind of scary, you know?
I believe, first and foremost, in the right for other people to live lives that are as long, happy, and safe as circumstances allow them to be. Because I believe that people have that right, that means that murder, torture, stealing, cheating, etc is bad. I don't need a deity to tell me this. I can look at us as a social species and go "this is detrimental to the group, it is bad." I can also go from the enlightened self-interest point: I don't want to be murdered, therefore it is wrong to murder.
Statistics in 1997 showed that the % of people in prison who were atheists was a mere 0.21%. Being religious, and believing in life after death, devalues this lifetime. If you kill someone, well, they're either in heaven or hell now, right? They still exist.
Not so for the atheist. This is the only shot at life I will get, which makes it incredibly precious to me. How horrible to deprive someone of the entirety of the remainder of their only chance at existence! How horrible to fully and truly destroy another person. The ramifications of that are profound. I value life so much more now as an atheist than when I was religious.
Furthermore, let me ask you this. Have you EVER eaten fat? Ever? Because that is one of the most abominable things, according to God and would be a sin forever. How about wearing polyester? You're probably sinning right now just by not being naked!
To me, the only God that makes sense is the God of the Bible. I know no other book that has stood the test of time in both prophecies written and fulfilled.
"And he said to them, “Truly, I say to you, there are some standing here who will not taste death until they see the kingdom of God after it has come with power.”"
Ooops? They all seem more than a little dead at this point.
For the other points:
Evolution does NOT equal abiogenesis, which is the creation of self-replicating forms from non-self replicating materials.
Evolution DOES occur. It is an observable fact. Every. Single. Morph in our cornsnakes is proof of that. Most mutations are neutral and do nothing. Some mutations are beneficial. Some are harmful. Color and pattern changes are beneficial for the captive corn snake, as those animals are propagated more. Mutations like stargazing are detrimental.
Ring species also show grand proof of evolution.
A deity would, I hope, certainly do a better job than the kludge our bodies are. The urogenital system of the male sheep boggles the mind; why does a 50 pound animal have to pee through the equivalent of a cocktail straw? Or how about the Recurrent Laryngeal nerve in giraffe? Actually, in all mammals. Instead of going straight to our larynx, it goes into our chest, loops under the pulmonary arteries, and goes back up to our throat! That's absurd. It only needs to travel a few inches, and instead travels over 15 FEET in the giraffe!
