I have been living in America for about 12 year. HS, college, and work. I have a residence here and a SSN so I can have a bank account ?

Leave before you get shot or worse... become a repiglican.

I don't know the answer to your question, but I enjoyed reading your story.

You are the prime example of what every immigrant should be.  Don't go.  America needs more people like you.  Become a citizen.

But good luck with whatever you decide.

Your SSN is attached to your identify for life.

You can of course rent out your home, but the rent collected would be subject to US income taxes.

You can only collect SS benefits if you are a US citizen or a Green Card holder. If you return to your home country (unless it's Canada), you are abandoning your US residency and every penny you paid into the system is lost. That's why naturalizing makes a lot of sense, unless your home country doesn't permit multiple citizenship. Since you didn't name your home country, I can't tell you more.

Your SSN is yours until you die

If you move back home you lose your Geen Card, depending on the country your biggest problem would be being allowed back into the US

If you paid into SS for 10 years after turning 18 you can live abroad and still collect SS if your country has a tax treaty with the US

You are an LPR and it gives you a right to live here, but you lose that right to residency once you abandon the country; or live aboard and only come to visit. Although non-citizens can collect social security if they have paid into it when they retire; they must be residents of the U.S. You must reside in the U.S. more than 50% of the time to retain your residency and must have sufficient connections here. Under some circumstances; you may be able to get a refund of the amount of your contribution if you are leaving he U.S. for good. Contact the SS for that. 

Your US SS number remains yours and if you worked for 10 years and paid into SS you could still collect SS payments from abroad when you reach 65. 

Your Social Security number is yours alone; it will not be given to someone else if you return to your home country. If your country allows dual citizenship, it would make sense to get American citizenship before you leave (although you will have to pay income taxes at some rate as an American citizen). Having American citizenship and an American passport will allow you to return to the States at any future point if you choose. Find out what level of income taxes you'd have to pay if you get American citizenship (but you'd probably still make more money by returning to your home country).

You claim to be educated so it doesn't take much to go onto the US Government immigration site and read  the official data........... you leave for more than 1 yr, you lose your green card

Do whatever you want to.

If you've been in the US you might want to get citizenship before you leave, just in case you ever want to return. (Although that does have its own tax implications)

So let me understand this,,,,

You recieve a paycheck, which has to be cashed,,

You have a high credit score, which one cannot get unless you've been using credit,

You own a house,

Yet we're supposed to believe you don't have a bank account

Yeah,,,, OK.