It will take at least a year and a half to get the teeth fixed. It takes a lot of pain to wear braces. You can't eat whatever you want. You have to brush your teeth after eating. I have to go to the hospital for reexamination once a week. You should be prepared for a long-term war of resistance!
I almost put on braces last year. Later, I carefully checked the information, including the doctor's advice. If your teeth are not unbearable, it is best not to fix them.
There will be many complications after tooth adjustment, so pay special attention to the mouth. Especially when you are old, your gums are unstable. Don't believe what some dentists say that won't make any difference. It's impossible. Finally, I gave up the whole tooth.
I suggest you think about it and wish you good luck! If your teeth are not unbearable, you'd better not fix them.