I'm with you on that really, the "modern" stuff is my least favourite part and I usually try to get through those bits as fast as possible to get back to the older era sectionsI played and finished Origins recently. It was the first AC game I had played more than about an hour of. I own all of the mainline games up to that (got them all free at some point over the years)
The stuff in Egypt was great fun but I really didn't like the stuff back in the real world. It just kept on breaking the immersion for me. Is that the same in the other games?