I usually leave either because (a) company, team or manager culture is bad, (b) unexpected opportunity or (c) bored/restless. This sounds like c.

I recently moved because I was bored and there were no internal options. I had been content for a while because I had young kids that took up a lot of my mental capacity but I reached a point where I needed more from work. I guess for me it was weighing up the risk v reward and I took the chance.

It was worth moving, but it has been a lot of work and challenging myself.