Great question. I unfortunately don't have a mentor at my new job and it definitely hurt at first. However, I don't regret leaving as I've still learned a great deal independently, perhaps akin to a kid leaving home for the first time to go to university.

I do find mentorship to be invaluable and hope to have a mentor again in the future, though. I am forever grateful to my mentor from my previous job for the foundation he provided. He instilled good habits and philosophies in me that pleasantly surprised some of my new co-workers and we've even implemented some improvements based on what I learned from him.

I would think that extra $40k would allow him to hire a mentor personally.