When will "I" cease to be?

[unity100]

As you evolve and become spiritually larger, you encompass more of existence. So, your active "I" changes. The past you becomes a limited, smaller subset of the new 'you'.

"We" is indeed a better term. Even currently, you are a 'we' which is comprised of infinite number of past characters which lived infinite number of experiences.

Just similar to how Ra talks about itself as "I am Ra", however it is a union of ~60 million+ entities...