At risk of stating the very obvious, but I don't think that anybody else has.
If you don't want to spin a C172, don't spin a C172.
There is no requirement at PPL or CPL level to spin - certainly in the UK and USA, and hasn't been for many years. The only thing needed is an awareness of the spin, ability to fly under control at low speeds, and the ability to recover from actual and incipient stalls.
There is no safety or training reason, unless you are doing an instructors course on it, to spin a C172. So don't.
G