Why should so much respect and adoration be given to Guru?
Srila Nitaipreshthji Gurudeva is really our only real connection with the Guru Parampara. He is the representation of all the previous Acharyas. Speaking with Him and developing a serving/loving relationship with Him is the same as developing that relationship with GaurKrishna Himself. Chaitanya Charitamrta also says that Guru is the mercy potency of the Lord who has come to save you and bring you to your real home.
Imagine that you are lost in a train station. When you run into someone who knows the way back to your home and they direct you “oh you should go here, buy this ticket and go this way, etcetera” then you are very grateful. You will say “thank you so much” and you feel like this person has saved your life.
This is only in the mundane world, but even after death Srila Gurudeva is telling us “come with me.” How can we ever repay Him for this?