If you put your name on it, you basically will inherit any debt, as any liens must be paid before you could exercise your full bundle of rights on the property anyhow. And, should the property be foreclosed upon, as an titleholder, you'd be named as a defendant and a foreclosure will appear on your credit.
In some cases, since you've been making the payment, you'd be found to have a financial interest in the property in court, (This will depend on your state laws and other factors, though). And, if you bought the house WITH your parents, you are nearly certainly an owner unless you relinquished your rights, which isn't necessarily by signing over title (although if you signed over the title willingly, you will have a hard time proving your claim). So, if you chose to push the issue in court, your parents may legally be required to not encumber the property without your consent regardless of whether you are on title or not. That would be a big legal mess though.
So, did you sign over the title? You don't just "remove" someone from the title. You'd have to have signed it over, or you should still have claim to the property, is basically what I'm saying.
Alright. This is getting too convoluted. Consult a lawyer.
If your signature was forged, it's not your signature and you still have all the rights to the property, although you'll have to provide proof. Identification should have been required to sign the deed in the presence of a witness, likely a notary public. Based on what you've posted, you have rights to the property as if you are on title, and your parents cannot encumber the property with any lien, mortgage or otherwise, without your consent. And, your rights should be protected by your title insurance. Check your paperwork.
As to whether or not it's worth it, only you can decide how hard you want to push your own family on the matter.