I would sign, but it's because it's the same either way. Most people don't understand signing that piece of paper or not doesn't mean ****.
There are 2 scenarios after a transaction:
1. Nothing happens:
This is 99.9% of the case, which means signing or not doesn't matter.
2. Something happens:
All the message/chat/phone records can prove the sale and is admissible in court. Having that piece of paper is only making the tracing process easier, but doesn't change anything.
It's hilarious that people think bill of sale matters. It only matters if there are some kinds of promises on it. For example, you bought a ****ty car that breaks down 10 feet down the road, your bill of sale can't help you going after the owner. The only time it matters is if the bill of sale promise "the car is and will be in working order for the next 3000 miles, if not, the seller agrees to pay for repair at a reputable service location, etc etc." Then you have a case.
There are 2 scenarios after a transaction:
1. Nothing happens:
This is 99.9% of the case, which means signing or not doesn't matter.
2. Something happens:
All the message/chat/phone records can prove the sale and is admissible in court. Having that piece of paper is only making the tracing process easier, but doesn't change anything.
It's hilarious that people think bill of sale matters. It only matters if there are some kinds of promises on it. For example, you bought a ****ty car that breaks down 10 feet down the road, your bill of sale can't help you going after the owner. The only time it matters is if the bill of sale promise "the car is and will be in working order for the next 3000 miles, if not, the seller agrees to pay for repair at a reputable service location, etc etc." Then you have a case.