Dude if you want out of the house... Sell it, take the loss and move on. It will hurt your wallet but not your credit. I know some guys that are talented and have degrees in their fields but can't get jobs due to bad credit and bankruptcy, employers look at that big time as a mark of a persons credability and reliability. So you owe 90k on it, and your saying its worth 40-50k, i know a lot of people that went through this, i think we all do now days. Get a realistic evaluation of your property value, it will cost some money to get it done, some real estate agencies around here will do it if you ask about putting your house on the market. See how close the evaluation gets to what you owe. If you can get enough that you can roll the remainder over to a new loan and get a different house then go for it, but your still going to be behind by the remainder of your original loan, thats life, you have to pay it. Look around and ask about government help that has been set up to help people like this. Also, you say you have good credit, pay your bills, etc.. Have you considered a refinance to get the interest and monthly payment lower? I know some that had 6% or higher and refinanced down to like 3-4% and got their payments as much as 40% less than what they were paying.
Ask these questions to your self....
Do i like this house?
Is it just the payment amount bothering me?
Is the debt so bad i want to commit fraud and ruin my credit and potentially everything else depending on it? (you can forget decent insurance premiums for one and good interest rates on any credit cards you have, they will double or triple overnight i have seen it happen)
How much of my "stuff" do i want to give up? Yes they can garnish wages depending on your state, they can also file for assets to be seized, boats, atv's, more than one vehicle, tv's, computers, you name it. I know one family that had to go to court to keep their vehicles and electronics, the collection agency processing the debt got everything else, their boat and offroad toys, even their garage full of atv's. It all depends on what the creditor or collection agency wants to do. And generally the bigger the debt the more agressive they get because its a bigger profit margin for them after buying the debt. Again this depends on your state, etc. I can't quote you every states laws.
Stay put, and know that your not alone. Does it suck? Yes... Is it worth making more trouble over? No... Stay and pay, or sell and move.
---------------------------------------------------------
1984 Honda ATC200ES "Big Red"
1982 ATC200E "Hondie"
1988 TRX300FW "Project Quad" Still in progress....