A snippet? Surely you don’t need to include a snippet of someone else’s labor.
I mean, it’s an example sometimes people want to just include a library to say, parse a file format. A small snippet of code that could be GPLed, all just to support a random file format that the users want.
It does belong to you. You still own the copyright of the work. You can still license it however you want, you just also need to make it available under the GPL.
Eh, I guess I can dual-license it but it still removes my exclusivity of ownership which is important in our capitalistic society in order to gain money which you use to live. Essentially GPL removes a large way to gain money. If you offer something for free but you have to compile it, or you offer it pre-compiled but paid for. Someone is typically just going to just compile the free code and offer binaries on their own site.