I used to love all that stuff when I was a Muslim. Dajjal, Yajuj and Majuj, the Mahdi, Isa's return and so on. Did you know that Muhammad thought that the Day of Judgement would happen shortly after Muhammad died? There is a Hadith where people came to Muhammad and said they found Dajjal chained on Island ready to be released. Do you know Muhammad used to be worried that one of the men who lived during his time was the Dajjal and Muhammad used to spy on that man outside the man's house till the man's mother asked Muhammad and his companion to leave the man alone?
There's a hadith where Muhammad pointed to a small boy and said if the boy lives, the boy would not grow very old till the Last Hour comes. So clearly, Muhammad thought the Last Hour would come within the next 100 years (at most and that's stretching it). So I'm sorry but unless there is a 1500 year old man still wondering around, there's no Last Hour.
I'll try to explain. You're a Muslim, which means you believe in Allah as an all-powerful God. But you don't believe in the Hindu Bhagwan, the Greek Zeus, the Sikh Karta Purakh or Jesus Christ as God. You are an atheist about every 'God' humans believe in except for Allah.
I am the same except that I also include Allah in that list.
As a Muslim you dont fear the wrath of Bhagwan to throw you in Narg, you dont fear Zeus throwing you in Hades, you don't fear Jesus sending you to Hell.
I am the same except I dont fear Allah throwing me in Jahanam as well as all the others you dont believe in either. That's the only difference.