There's also this: As you get older, your eyes age and, depending on whether you are naturally near-sighted or far-sighted, you may need bifocals or reading glasses.
It's easy to use reading glasses when you wear contacts. And they do make bifocal and multifocal contact lenses. But I haven't found the multi-focal lenses to be as clear and sharp as regular contact lenses.
In other words, once our eyes start needing a second form of correction, it makes it harder to use contacts.
Are you near-sighted or far-sighted?