Only speaking for me, obviously, I would be too afraid of CTB by using a firearm for fear of not getting the job done and then being left in a condition whereby I was unable to even attempt some other method. It has happened and does happen. You know "flinching" is real and what the mind tells the body to do may be involuntary and out of your control. That's all it would take, a slight flinch at the moment of squeezing the trigger. Then you may end up seriously wounded, unable to speak, talk, move at all and unable to attempt any more "bus catching" on your own. That may be a worse way to be than right now. Only you can judge that. Just my 2 cents.
Oh, on an aside, its-about-time stated that felons can't own/buy firearms. Legally true, yes. But, practically true, not so much. They buy/acquire/own guns every day in this country. All kind of loopholes in the laws and nefarious ways of acquiring firearms.