You are conflating abiogenesis and evolution, as many religious tend to do. Here is a religious man that you may listen to explaining the difference to you: [thinkingthroughchristianity.com]

Also evolution is defined as the change in allele frequencies that occurs over time within a population. Not this monkeys to humans hogwash you have been brainwashed by your preacher/religious leader to believe.

I see that u identify on your profile as religious . And anitheist . Would u explain to me what either means to u ? What is your religion ?

please stop preaching here.

Development has no beginning? How can you be so ignorant?

Cosmology models suggest (with evidence) the big bang theory.

Then we need to move into abiogenesis [rationalwiki.org]

Once we have life, we move into evolution. . .

If you are not afraid of truth, spend a few hours (watch all the episode of these series). If you have the ability to process facts over supernatural faith (belief without evidence) assertions you may (not holding my breath) be able to learn something. This series science demonstrates our evolution from simpler life forms.

My response is I don't know (or care) how and why not?

In reality, if you answer how something happened, you'll know why it happened. Most people can't accept the answer of how for the answer of why, so they continue to look for meaning. Thing is, any meaning found will be subjective. The only objective answer of why is how. The need to know why apart from how is where religious and supernatural one of the factors that spurred religious and supernatural beliefs.

Actually, there was a beginning. Nothing existed before the Big Bang. Since then, everything has been a chain of cause and effect continuing to today and beyond.