NATO hasn't acted like that at all, they have incorporated everyone so far who wanted to join and was suitable. The only area which is hotly contended is Ukraine, not for any good reasons either because they are simply a pawn for both the East & West and their viewpoints on why they want the land.
(Not that Russia hasn't complained from the outset about NATO expansion, Yeltsin gave a very stark expression of it in 97)
The only ridiculous part is your unwillingness to have the slightest modicum of understanding from a Russian perspective of why they don't want Ukraine in NATO.
Not that this gives Putin any right to do what he is doing, that is utterly abhorrent, but you have to understand just why we have reached this point and that the West has its own blame to take from this too.
Instead of playing games on here, take to time to go and sit down with some Russians who have this view and listen/understand their opinions as to why. Maybe you'll be more inclined to take it onboard from them.