I'm well aware of that. [As much as he doesn't want you to worry about him, he understands that that's something that can't be helped.]

Which is why, when possible, I would like to give you less to worry about. A creature such as myself...my lifestyle is naturally dangerous. The beasts I tame are ferocious and wild. The devils that follow in my footsteps thirst for my blood.

...keeping a pact with someone like me would understandably difficult to maintain. Mortals naturally worry about those they've grown attached to.