Hypothetically speaking. For entertainment purpose only!
You're a professional hitman. You're offered an extremely high amount of money (say 20 million dollars) to take out a well-connected inmate at a local prison. Catch is, you need to commit a murder, and get caught, to get yourself into the same prison.
Chances are if you're smart enough, you can commit the murder so as not to get life but maybe 10-20 years with the possibility of parole. Like 2nd degree or manslaughter.
It's a guarantee you will recieve your money, and it's a guarantee you will end up in the same prison. It's not a guarantee what your sentence will be. But you're smart!
Would you risk 20 years of your life if you knew there was 20 million waiting for you when you got out?