My biggest regret for being an athiest/agnostic

Being merciful contradicts with eternal hell. You can claim it’s not eternal but most Muslims would disagree. Kaffirs, mushriks, murtids, will burn in Hell along with Satan for eternity.

I am open to debate, I am not stubborn either. I don’t post much on religion section but this thread was specifically about agnostics/atheism so I jumped in. Don’t doubt my intention, I am not here to hurt anyones feelings, just a healthy discussion regarding islam vs agnosticsm/atheism.

I have raid Maududi’s translation and many different tafseers. Sorry, I didn’t find anything miraculous.

Will Satan be in eternal Hell or not?