They don't question bro .
There would very less sane atheists who'll question it properly . Their main agenda is just to defame islam and poison muslims for islam .
Trust me , I've spent my 3 years in their surrounding . Debated them , conversed with them , answered their all questions with sanity and knowledge . But still they are some of most stubborn creatures . They have decided in their heart that they won't accept any truth from Islam but only defame it .
And trust me , once I was also doubtful about islam when I started talking to them, they just said some weird things that hurt me about islam , it was in start but alhamdulillah when I joined the company of religious muslims , I realised atheists lied to me and were trying to trap me , I was saved from this ftnah. Alhamdulillah Allah saved my faith .
And one thing more , you don't know how much dirty they're in their real lives . You seriously have no idea . If you knew it , you wouldn't even like to sit with them .