Does the "Legacy Edition" of the Sims 4 confirm we are at *least* halfway through The Sims 4's life?

I can see one reason for them dropping 34 bit before the end of the sims 4...... if and when they do bring out sims 5 they will want people to have 64 bit computers, so it will give some people a bit of time to get a more updated computer, and they will be able to enlarge EP’s ( more lots especially). Maybe the need 64 bit to do cars/and/or farms.