The Hardest Pillar Of ISlam

Before I begin, I want to say that since I am not a Muslim, my opinions may be off, and I invite any Muslims out there to openly dispute them, and if the argument seems fair or correct, I will change my post. Out of the Five Pillars of Islam, saying "There is no god but God and Muhammad is his prophet," praying five times a day, giving to the poor and needy, fasting during Ramadan, and making the hajj, a journey to Mecca to visit the Kaaba, I think that the hardest is making the hajj. Saying "There is no god but God and Muhammad is his prophet" is just an act of faith, if one is a true believer, that would be no problem; praying five times a day would also not be a problem, you would simply have to let your teacher or boss know, and excused yourself at the designated times. As for giving to the poor and needy, I am pretty sure that the poor and needy themselves are excused from this pillar, and for people that can spare the money, it would just take a certain frame of mind. The same is true for Ramadan, if you keep yourself occupied, and you're used to it, than it would not seem that hard, because of the meals before and after the sun rises or sets. But the hajj seems harder. If one is living far away from northeastern Africa, southeastern Europe, or southwestern Asia, the hajj is a long and costly trip to make. This was especially true in older times, where journeying was much slower and infinitely more dangerous.