Insects have memories

The topic should have been that "even insects have memories".
This post is for the above fact.
I do not have scientific data but I believe it to be so.
There are good insects and there are bad insects but I feel for humans mostly insects are bad. We can give examples of common insects like flies, mosquitoes, bed bugs and the like.
What happens that those insects carry bacteria and germs and those can affect humans by making us ill.
How I came to know? Well it is my guess and I can give two or three examples.

• In a place where people have food and then do not clean or wipe the surface there will be flies and the flies will have a way to remember it. If a new person comes along and has food and cleans it the flies will still find a way around that (even though it is clean).
• We know that Demodex lives in our skins and it gives rise to pimples and stuff. And basically we cannot get rid of those because the more we get rid of them more will be coming out and inhabiting our face and that is one reason I gave that we should keep a beard because that gives them a place to stay, sort of like a forest cover where they (i.e. the Demodex) can stay peacefully just like wild animals in a forest. If we change the way we shave. Like suppose we keep a moustache and a beard and make it as "mutton chops", then the Demodex will forget how they used to live and they will attack. Rather they will not forget but they will want to live like they always used to and when they are not able to, they will panic and "make a colony" which is nothing but a boil or a pimple on your face.
• We can also see the example of ants which tend to remember where they find the food and their way back.

Thus we see the world is more complex than we can imagine and it is of utmost importance that we treat it delicately. We do not own the world. We cannot change the world.
Our aim in life should be "peaceful co-existence".
We should also allow the organisms including insects to survive. By not shaving our beard we are giving the Demodex a place to stay in our faces and they will "remember their way" and will "go down" in your face. Even if you shave your moustache it will not matter, the Demodex know where the "lush life" exists and will find their way to that place which is your beard. But if you damage your beard and deny them a place to stay they will strike back and give pimple on your skin which may ultimately leave a scar or a black head.
Thus even with organisms living in our bodies we should live peacefully.
I will say even our bodies are not ours. They have probably been handed to us by a "higher authority" someone like God. It is like we have to pay rent for that. And we can repay through good deeds and peaceful coexistence. We should not harm others and disrupt their lives by whatever action. First our duty should be towards fellow humans and then other animals and what I am trying to say we should not even forget the tiniest of the insects. Live and let live should be the motto.