Assalaamu Alaikum
In Islam, Marriage can be Monogamy/Polygamy( polygyny to be specific). Marriage is Heterosexual. When one is not capable or independent then marriage is not recommended. Similarly , polygamy is not recommended to all and sundry. What we find in Quran and Sunnah is clear boundaries,rules and examples of conduct, that covers the minute details of marriage. When followed in spirit to the word, a happy marriage results.
Here are the verses related to the topic of thread
And if you fear that you shall not be able to deal justly with the orphan-girls, then marry (other) women of your choice, two or three, or four but if you fear that you shall not be able to deal justly (with them), then only one or (the captives and the slaves) that your right hands possess. That is nearer to prevent you from doing injustice.[Quran 4:3]
But whoever earns an offense or a sin and then blames it on an innocent [person] has taken upon himself a slander and manifest sin.[Qur'an 4:127]
And they request from you, [O Muhammad], a [legal] ruling concerning women. Say, " Allah gives you a ruling about them and [about] what has been recited to you in the Book concerning the orphan girls to whom you do not give what is decreed for them - and [yet] you desire to marry them - and concerning the oppressed among children and that you maintain for orphans [their rights] in justice." And whatever you do of good - indeed, Allah is ever Knowing of it.[Qur'an 4:127]
And if a woman fears from her husband contempt or evasion, there is no sin upon them if they make terms of settlement between them - and settlement is best. And present in [human] souls is stinginess. But if you do good and fear Allah - then indeed Allah is ever, with what you do, Acquainted. [Qur'an 4:128]
And you will never be able to be equal [in feeling] between wives, even if you should strive [to do so]. So do not incline completely [toward one] and leave another hanging. And if you amend [your affairs] and fear Allah - then indeed, Allah is ever Forgiving and Merciful. [Qur'an 4:129]
But if they separate [by divorce], Allah will enrich each [of them] from His abundance. And ever is Allah Encompassing and Wise. [Qur'an 4:130]
From above and world around , am deriving the following:
"Cant do justice to even one"
- Dont marry, become fit and find a suitable one to marry.
"Can try and do justice one"
- Marry a suitable one
"Feel 'super just' and have opinion"
- First marry one.
"married one, but Not just"
- Fix it. Marriage counselling. Or when demanded for divorce, don't violate. Avoid court/ revenge please!
"divorced/ widowed, want one"
- Find suitable, marry one, start fresh, be a just husband, dont carry old baggage or bad experience.
"Married one, Feel super just"
- "Married and no kids", then its time
- "Have kids, got more time", try adopting orphan kids.
- Still got more in you? Volunteer for a community/social cause.
"Married one, and content"
- Alhamdulillaah. If this is your limit. Be happy you found it. Thank Almighty and your wife( and kids)
"Divorced/widowed, dont want any more"
- If a suitable partner turns up, dont be adamant, life has a way. Time heals.
[Above order covers up most of 'men'kind.]
"Not just but want more"
- Not a good sign. "marriage counselling recommended". Beware of injustice and sins in this phase. Forget marrying second one, you are in risk of loosing everything, both in here and hereafter
"Married one, feel super just, want one more"
- Apart from self probing questions on need (yours v/s prospective), ask wife if she thinks you are sane.
- You and wife, are on your own, beware of the calamities, if it fails.
- If its basis is lust and executed by cheating; you will be held responsible for misuse, the cascading negative effect on wife/children.
"Practising polygyny, wifes are happy"
- Very few belong to this category. Such families [ie combo of husband and wifes] are rare (and not necessarily elite). Each is tested to his/ her capacity. Continue to thank Allah. Surely, Lust is not the basis of this family (just like lust is not basis of a happy monogamous family)
In all this, the important point to remember is
Married and wife(s) complain of injustice... Her rights and valid wishes cannot be overlooked. The state (or society) can intervene. And the judgement day, every action will be questioned.