1) The reality you mention which is not going to remain, is an illusion, is a dream, that temporal changeable so called reality, in fact is no reality at all...
So to start with, first of all, it is our misconception of taking the perishable as reality, is the cause of our being lost .... The remedy for this, is to arise above this illusory creation and search that one permanent Reality, which is none other than Wahiguru Akal Purukh. Your soul is your reality, it is our birthright as humans to go after our this real objective, so that we too get out of the perishable creation and end our endless comings and goings in this creation. Our attention on the perishable, or our ignorance of that unique reality, is the cause of our wanderings as said before .... Hold on to His Light, and reach your true Home
2) then the question about remebering God .... it is indeed a blessing on us, not a burden. In the sense, that one goes where one´s mind and heart is. So, by remembering Him, meditating on Him, you are not doing Him any favour....As He does not need all this...Just as it is unecessary to lit a candle in Sunlight.....but yes, you can profit yourself by taking the advantage of that light and do your real work, which is, bhajan bandagee ...It is we who get inmense benefits, by remembering and loving Him.
Cheer up man, you are currently very low...remember, however life maybe with you, but He is always there to guide you, if you just turn your face towards Him...and He is right within you at all times, nowhere outside ...and according to the Gurmat, His Simran is the real turninig one´s face towards Him, and being in His presence.
3) Why did God create us? Such a Supreme being, who has created all the infinite universes as well , do you think that He can make any mistakes? Have we stopped to think ever, the power and the knowlege He has to do all that? The thing is we are petty, our angle of vision is limited and poor, so we judge the Perfect One, within the limits of our agaynta and moorakhta ... Come on man, He is our very own true Father ...our essence is as same as He is. Just as a ray of Sun is related to the Sun, in a similar way our souls have emerged from Him, to merge in Him only ...
The current state of most of us, is as, we are in a dark well, and we are shouting why are we here, who has thrown me here? First of all, let us get out of it...we will have ample time to know how we reached there, but not that by entertaing those petty thoughts, we waste our time and we die there, without giving the chance to be pulled out on the surface and know everything by ourselves...and our surroundings, even about our origin...so cheer up man, life is too short to be wasted in the darkness ...come out in the Light and know thyself ...
You are free to think as you want, I will only suggest you to keep company of positive people as soon as possible, as your self estimation now is very low, and pray to Him sincerely from your heart to show you the way to Him...
May God bless you.
Sat Sree Akal.