Others have mentioned that that's a bad argument, so I won't rehash that.
> getting placed at the scene of a crime
That's a pretty damn bad "worst case scenario", but here's a few I'm going to toss out without too much thought:
1. Health insurance companies can deny you coverage. In America, that can be a literal death sentence. (Yes, GINA 2008 was passed, no, I don't want to bet my future health care coverage on it not being repealed, mangled, or bypassed in some other way.)
2. International risks. A lot of discussion here is largely focused on American law. But many of us aren't American, or aren't just American. Look at my username; I have ties to another country, and I frankly have no idea what sort of risk I might get exposed to there. Getting placed at the scene of a crime in some jurisdictions is much more serious than you make it out to be; being identified as being a relative of someone else could also have dire consequences.
3. You know those scams where Grandpa Joe gets a frantic call from his distraught granddaughter Jane, and she's in Mexico being held up on a bogus charge, but if he wires their police department $500 ($5000?) the whole thing goes away? This becomes much easier if you can look up family histories.
4. You cannot predict the future. You have no idea what's coming down the pipeline.
I'm not seeing anything compelling in any of your 5 points.
0. You are arguing that people who aren't subject to a specific risk should be worrying about being subject to that risk. That is a bad argument. So bad it feels absurd to have to type it out to you.
1. The law could change in the future? OK... Laws could change in an infinite number of ways. I can't mitigate an infinite number of risks.
2. If you visit a country where this is a risk to you, then avoid the risk. Nobody said otherwise. It is dishonest to argue with strawmen.
3. There are many easy ways to find someone's relatives. DNA does not change this situation in a material way.
4. Yes, I agree that you cannot predict the future. But much of your argument is based on the assumption that you can do so.
Others have mentioned that that's a bad argument, so I won't rehash that.
> getting placed at the scene of a crime
That's a pretty damn bad "worst case scenario", but here's a few I'm going to toss out without too much thought:
1. Health insurance companies can deny you coverage. In America, that can be a literal death sentence. (Yes, GINA 2008 was passed, no, I don't want to bet my future health care coverage on it not being repealed, mangled, or bypassed in some other way.)
2. International risks. A lot of discussion here is largely focused on American law. But many of us aren't American, or aren't just American. Look at my username; I have ties to another country, and I frankly have no idea what sort of risk I might get exposed to there. Getting placed at the scene of a crime in some jurisdictions is much more serious than you make it out to be; being identified as being a relative of someone else could also have dire consequences.
3. You know those scams where Grandpa Joe gets a frantic call from his distraught granddaughter Jane, and she's in Mexico being held up on a bogus charge, but if he wires their police department $500 ($5000?) the whole thing goes away? This becomes much easier if you can look up family histories.
4. You cannot predict the future. You have no idea what's coming down the pipeline.