Gentiles SHOULD follow Torah. I get very upset at this tradition that says they shouldn't. It's wrong and against Torah!!! Yes, foreigners were punished for not keeping the Sabbath too, and we must remember that there was a mixed multitude which came out of Egypt. In Leviticus 5 we are told that things like robbery, swearing falsely, extortion, etc are wrong. Torah says to take care of the poor and help poor people in a way that lets them keep their dignity, abd to leave some food in the edges of our fields for poor people and foreigners to pick, to kerp honest scales for doing business, to treat strangers well, to honor HaShem once a week by honoring the fact that he created ALL things and people, to be faithful to our husband or wife, etc. We are told not to curse deaf people or trip blind people. And of course not to turn to idols. These things were commanded to Israel only but are the only moral thing for ALL people to do. Tradition aside (yes, I said it), do we REALLY believe that HaShem wants all the people of the earth to be morally corrupt and die in their sins while we pat ourselves? Remember that Isaiah taught that Israel is to be a light to the Gentiles, not teaching them to forsake His righteousness just because they dont belong to the club. That attitude and tradition is against the very design HaShem had for the world from the time of Adam and Eve and that kind of apathy is what is wrong with this world in the first place. I respect the sages and rabbis, but when one of them teaches something that disagrees with the words of G-d, we must follow G-d instead. The 7 Noahide lawd are a good start, but they leave out some important lessons that can only be learned in Torah, and we should be teaching that when someone like this gentleman asks a real question about Torah. Moses did say not to add to it OR take away from it.
So yes sir, Gentiles should follow Torah, but be careful about what you hear because the Torah speaks for itself and people like to turn it into their own thing. The rabbis can be a great help with great advice, but even they are not HaShem and their advice about how to do Torah should always be compared to the scriptures. And no, you do not need to "convert" to Judaism to serve G-d as He wants. This also is not found in Torah. Obeying Hashem is something you can choose even without conversion.
Please read:
Isaiah 2:2-4, 2:22, 42:1-10, 49:7-8, 55:1-9, 56:1-8, 66:16-18, 52:13—53:12,
Micah 4:1-7,
Jeremiah 31:28-34.