NO, gay is not encouraged in Heaven. Why? for the following three reasons:
- First: Qur'an forbade alcohol in this life:
They ask thee concerning wine and gambling. Say: "In them is great sin, and some profit, for men; but the sin is greater than the profit." (Al-Baqara; 2:219)
But that does not apply to Heaven. However, Qur'an clarifies that Heaven's alcohol does not cause the negative symptoms that we see in this life:
There will circulate among them young boys made eternal (17) With vessels, pitchers and a cup [of wine] from a flowing spring (18) No headache will they have therefrom, nor will they be intoxicated (19)".
It is clear that alcohol in Heaven is different than what we know such that it does not entail any negative symptoms. Allah forbade alcohol in this life but He has mentioned reasons for that and has mentioned those reasons are void in the hereafter. In the same way, Allah has asked us to avoid homosexuality in this life:
And [We had sent] Lot when he said to his people, "Do you commit such
immorality as no one has preceded you with from among the
worlds?(80)Indeed, you approach men with desire, instead of women.
Rather, you are a transgressing people."(81) Al-Araf 80-81
Do you approach males among the worlds(165).And leave what your Lord
has created for you as mates? But you are a people
Do you indeed approach men with desire instead of women? Rather, you
are a people behaving ignorantly."
For all this, if homosexuality is encouraged in Heaven, should not be a single reason to clarify why it is allowed in the same way alcohol is allowed?
- Second: The Ayah you mentioned:
وَ يَطُوفُ عَلَيْهِمْ غِلْمانٌ لَهُمْ کَأَنَّهُمْ لُؤْلُؤٌ مَکْنُونٌ
There will circulate among them [servant] boys [especially] for them, as if they were pearls well-protected.
Qur'an was revealed in Arabic and specifically in Mecca Arabic. The best way to understand words meaning has always been based on Mecca Arabic meanings at that time and/or before Qur'an revelation. In Mecca, there was no homosexuality (although there were a lot of horrible heterosexuality forms). That is, Arabs had used poetry to document all their life aspects. However, in pre-Islamic poetry, we do not see anyone mentions homosexuality in any context. I am sorry to provide Arabic study here homosexuality in poetry But English studies are not available for free Homoeroticism in Classical Arabic Literature. In fact, all who mentioned that there was homosexuality in pre-Islamic has provided poems from Islamic era!
Subsequently, if (well-protected pearls) had not been mentioned in any context before Qur'an, we cannot jump to a conclusion and say it implies homosexuality because in other languages and cultures do, can we?
Third: Note that "هِمْ" is for male, that means "them" is about male not female
I am afraid that is incorrect either. It is well known that Arabic language is not genderless like English or Persian. For example, in English they for group of males and they for group of females. While in Arabic, like some other languages (e.g. French: ils: male, elles: female), two different pronouns are used (Homa: Male, Hunna: Female. Now, the question is, What if the group is a mix of males and females? In French, Ils is used with all-male or mixed groups, In the same way, In Arabic, a mixed group of males and females will be always referred to by plural masculine pronouns or conjugations. Hence, "هِمْ" is for male is not necessarily for male
Last note, in Islam, it is believed that our brains are granted by Allah, the ultimate creator. As a result, these brains will never transcend their creator's power. The human-designed computer, will never go beyond what the human being has designed for, unless there are design errors. A small test for this that challenges our capabilities, ask anybody to use his prolific imagination and tell you about new unprecedented creature he imagines. The best s/he can do is migrate some existed pictures or parts to formulate this creature. He will never be able to create something from nothing known. The profit Muhammed has said "Allah said:
‘I have prepared for My righteous servants what no eye has seen and no ear has heard, nor has it occurred to the human heart.".
My understanding of Heaven description in Qur'an is to motivate people to be good in life and not to think of rewards details and what kind of sexual pleasures they will get.