Yes of course. Let us be thankful to the generosity of that guy who is willing to give his 10 bitcoin without anything expecting in return. But why would anyone would give us that amount without nothing. Well, let us just be thankful. I will certainly do the same thing as you want to do. Maybe not half half of it. Maybe I would spend 1 btc of bitcoin to taste his generosity, treat my family and have something to buy for that bitcoin. The rest would be divided for investing, and trading. And would give some to others to continue the flow of kindness of that guy.