IS SEX A MERE NEED?

Given the meaning of "mere"  you are asking in your title whether sex is an **insignificant** need -- a question that you never actually answer, even if what you meant to ask was "Is sex an essential need?".

And BTY,  noses do not breathe.  They are one of the two passageways through which a **person** breathes.

Moreover,  it isn't true that **all** people hide "those parts" (by which you presumably mean their genitalia) by covering them with trousers.   And some people **do** hide their noses and their mouths.

And what's with the implicit claim that sex cannot be an expression of intimacy that helps to fulfill deep love as long as some people regard sex in the same way they regard eating and drinking?

According to COLLINS, mere: There is more to good health than the mere absence of disease. And, In Poland, the faith has always meant more than mere religion. And for me, There is more about sex than a mere need. We should think and know how to deal with it. Don't tell me that l haven't mentioned that. The dictionary itself hasn't mentioned what is understood.
The rest of your comment is not worth talking about. Thank you for your interest.

How interesting that the sentence you quote from Collins (which is not a definition but an instance of the adjective's usage) is something that is used to illustrate what Collins says that the adjective is used to indicate:

Definition of 'mere'
    
mere
(mɪər  )

1. ADJECTIVE [ADJ n]
You use mere to emphasize how unimportant or inadequate something is, in comparison to the general situation you are describing.
[emphasis]
...successful exhibitions which go beyond mere success.  
There is more to good health than the mere absence of disease.  

https://www.collinsdictionary.com/us/dictionary/english/mere

So thank's for showing that you are not above using the underhanded tactic of selective quotation to "prove" an invalid claim.

OED


a. Having no greater extent, range, value, power, or importance than the designation implies; that is barely or only what it is said to be.

c. In predicative use: insignificant, ordinary; inadequate, feeble.

"And for me, There is more about sex than a mere need. We should think and know how to deal with it. Don't tell me that l haven't mentioned that."

Please tell me **where** you explicitly "mentioned" that there is more "about" sex than a "mere" need, let alone that we should think and know about how to deal with sex.

And were you really correct in saying that noses breathe?

I think that you have understood by now that l have no time to waste. It seems to me that you have nothing else to do except writing lengthy explnations and most of them are irrelevant to the subject. I gave you examples, and told you that the dictionary itself doesn't mention the extra explanations, so don't ask me why l haven't mentioned them. You answered me where l mentioned it. Do you play this role on purpose or you don't understand what you read. You are impossible, Baldwin. Now, l know what you will answer me. I think it is impossible to make you understand.

"It seems to me that you have nothing else to do except writing lengthy explnations and most of them are irrelevant to the subject".    
    
What's an "expination"?  
 
And how is noting the evidence that shows that you have not understood what "mere" means or that you've misused the dictionary that you appealed to in support of your claim that you do understand what the word means irrelevant to the issue of whether you've written poorly when that is the issue at hand?  
 
BTW, did you mean to say when you wrote "You answered me where l mentioned it"  "you asked me where I mentioned it"?  I have no idea how one answers a question at the same time one asks it.

"I am surprised how some can practise sex
as something normal just another sense.
They eat and drink and sex is quite like that,
a usual thing in life, a normal act. "

I did not know that sex,
along with hearing, sight,
and touch and taste and smell,
was also to be listed as a sense.
How so?

I always thought
it was a bright experience
brought on by heightened stimuli
that pass into the brain
through tongue and skin and nose
and ear and eye.

Nor was I much aware
that sex was quite atypical
of men,  perverse, and contradictory to all
that nature asks of them.

But in the light of J-Z’s
vaunted expertise
in matters sexual,
what do I know?

Why is this poorly written piece classified as containing extreme content?