Being able to give nitro in credits to people

Ok so, for exemple, i have a nitro classic in my credits that i got of someone [Since i buy my own nitro]. I didn't know that if you accept a nitro classic gift while having nitro it would go into credits. The only problem is that since i will never use it, it will stay in my credits for years with no uses, so i wanted to give it to somebody, but we can't. I think it should be a feature since people like me will get stuck with a credit they probably wont use for a while.