:slm:
Dear Sister I would be remiss of my duties if I didn't correct you here. Mohammad(SAW) was not afraid his Ummah will fall into Shirk because a Hadith clearly states:
Narrated 'Uqba bin 'Amir: One day the Prophet went out and offered the funeral prayers of the martyrs of Uhud and then went up the pulpit and said, "I will pave the way for you as your predecessor and will be a witness on you. By Allah! I see my Fount (Kauthar) just now and I have been given the keys of all the treasures of the earth (or the keys of the earth) "BY ALLAH! I AM NOT AFRAID THAT YOU WILL WORSHIP OTHERS ALONG WITH ALLAH AFTER MY DEATH, BUT I AM AFRAID THAT YOU WILL FIGHT WITH ONE ANOTHER FOR THE WORLDLY THINGS"
Volume 2, Book 23, Number 428: (Sahih Bukhari)
The only time shirk will become prominent again is after Isa(AS) comes and defeats Dajjal which will make Muslims rulers of the lands. After some times passes after Isa(AS) death Muslims will start forgetting Allah Most High through the death of Learned and pious people to the extent that the best Muslims before the end of time of are ones who just tells others not to fornicates in Public and they say "I remember my Parents used to say Allah ....".
A breeze will come and kill the ones with an iota of Belief in Allah Most High in their hearts and only when all that remains are those that have gone out the fold of Islam and become polythiests, the ones that commit shirk, the trumpet is then Blown for the day of Judgement.