But if you're a big executive, "wanted to spend more time with my family" is a popular one. "Need to explore other opportunities" is a little weaker but still

But if you're a big executive, "wanted to spend more time with my family" is a popular one. "Need to explore other opportunities" is a little weaker but still works. "This chapter in my life is over" is also popular. I think I should make a bingo card out of these.