I am aware of booking's dirty tools to make you feel you have to book NOW! However, after around 100+ booking.com booking all around the world (including small villages in Amazonia or Laos) I am eternally grateful that for that extra 1$/night or so I get instant support with whatever probleem I had.
Obviously as middle man you take some part of the pie - though idea is that it's worth for everyone.
BTW - it's not that common to meet customer with 100+ reservations. So excuse me for asking - what do you think of the changes in the account area (My Trips)?
Currently I only have the android app (well, traveling again) and I am mostly satisfied with it.
However the web version I always found a disaster. Especially since I had a linked business account too, and the SSO just craps itself into a redirect loop when I try to logout from it.
Everything else seems to be very user-oriented and I am satisfied in general.
(ha, I also happen to know the storage system behind the backend ;-) )
When speaking Vietnamese, you get an extra discount.