Hi,
First of all: Welcome to the forums!
I have had my Note 4 for about the same amount of time and charge it in three places:
1. beside my bed
2. At work.
3. In my car
The charger I use at work is the original brick/cable combo from my good old Note 1. Four years down the line and it is still kicking. In the car I have a two year old amazon basic 12v adapter with a separate cable. This one is also still working like a champ. The bed charger was my Nokia N900 charger which was six years old. Note the past tense in the later case. This charger was working great until my wife started to use it (a few months ago) and then it broke. My wife has a nasty habit of using the phone while it is charging (she has my old Note 3). I get the feeling that micro USB does not take well to being continuously flexed. I have gone through large numbers of cables in the places where my wife and kids charge (and use) their phones, but my exclusive cables seem to work just great (I leave the phone alone when charging).
So, yes, I think that micro USB is easy to kill, but I can't see how the phone has anything to do with it. More likely to be a mechanical issue.
Regards,
Eric.