I am very pro-DNA testing. No person should have to pay for a kid that is not biologically his. I've seen deplorable court cases where some random guy is getting tagged for child support, finds out he's not the father, and the judge says to suck it because of the chyyyyld. In these cases,
the mother should be inconvenienced with finding the right BabyDaddy and making the right dude pay. Not sticking the wrong person should be the overriding concern.
HOWEVER, there is also a time factor. If a guy suspects his wife is cheating and she's pregnant, he should dump her ass and wait for the DNA test. If he decides to take her back without knowing and raise the kid, he cannot come back 20 years later and disavow the kid.
The question does not state how involved the OP was in his daughter's life. There isn't much detail, but he needs to ask himself: what would the purpose of legal action be? He's probably out of luck and the statute of limitation is likely expired. He probably needs to just let it go. I feel sorry for the kid in question, she was lied to as well.
As an aside, people who drone on about how the CF need to "support the fyooooture" need to be slapped into next week.
We already are, and one need only look at the mess that is the Fambilee Court System and the foster care system. We are paying for others' mistakes, things we were smart enough to avoid.
Millions of taxpayer dollars are expended to sort out these situations that could be averted if people only lived by a few realities and rules.
1. Men can be lying 'hos.
2. So can women, particularly women who are hungry from sperm.
3. Therefore, be selective with whom you have sex or even a relationship. Have some self-respect.
4. USE BIRTH CONTROL--Christ, doesn't anybody use birth control anymore?
5. Evaluate people and situations before you have a kid. That means a logical progression: dating, marriage, establishing yourselves as a couple. And yes that means YEARS. Not, "I wanna have your baybee" five minutes after you've met a person and falling out of luv with that person in a year.
But they won't do it because Breeders are not rational.