If they can track it to your family they'll track it to you. How much torture do you think your family can take? Stealing a random strangers identity is much safer. And even if you practice communism, they're going to track it to your commune and how much torture do you think your comrades can take before they give you up? I'm just glad I don't live in UK and I might have a couple more months to work it out. UK had to early release all the rapists just to make room for the thousands of people getting sent using slurs on social media.