He is your father. Go to him ad explain the situation, if could bringa evidance that this guy is not reasonable and responsible in ling, it will snows your dad how much he is wrong to be made with you. If he its not worked, ket him know that you give money because you love your dad,If you can take risk with that money, give yo your dad, but make sure to keep another witness and put an agreement with that guy by paper if its possible with the terms.
Qur'an also encourage us to keep terms or contract or agreements with witness in matters. Its best for all parties.
If the guy owes a lot of money to people, he must be drinking down their money or smoking it all off. He probably gambles all on the horses. I bet your father is a sucker to the guy's bleeding heart tales of stories, probably full of lies.
I had many phoney guys coming to my place of work, crying crocodile tears. They are tricksters. LOTS of them are and so you have to watch them.
One such guy cried about his 3 year old son dying with cancer. From the beginning, I didn't buy the story. He kept sobbing on and on.
Before you know it, he shifted from child to his uncle by mistake. He mixed up his stories. How pathetic.
You are right to loan money to drunks. Why doesn't your father lend money to the guy himself instead of asking you doing it.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.