1. Retirement is so boring.
Schwarzenegger insisted on going out to play movies after retirement, probably because retirement was too boring. In fact, the elderly in our country also have this situation now. After they retire, the children don't have to take care of themselves, just have fun for themselves every day. Maybe I will get together with other aunts and grandfathers downstairs, play mahjong or something, and then go out to dance in the square dance at night. It is also very happy. But it's still boring after a long time, especially for people who can't stay idle. They will still look for jobs, such as finding a piece of land to farm their own land.
He still loves movies.
Schwarzenegger must still have a passion for movies. He still likes this profession very much. Even after retiring, he can't give up. Maybe his work is not as heavy as before. He still focuses on his body, but he still pursues movies.
The script is very good, but it's a pity not to play it.
I think it may be that this script is so good that Schwarzenegger decided not to abandon it after reading it and had to perform it. It will be a great pity to miss this script. I don't think it's easy for an actor to meet a good script. Good scripts often attract competition from actors. If he chooses not to appear in this movie just because of his age, he will be very sorry.
4. Because you have to make money and spend it yourself.
Maybe it's because Schwarzenegger wants to make money for himself. The more money he earns, the better. While he still has the ability to make money, he still earns a lot. But I think it's time for him to enjoy his money.