Yikes, I'm on a 32-bit computer and wasn't planning on getting a new one. Will have to make that decision when the time comes. As long as we can continue to play the game and packs that we already own, it might not be so bad. Frankly the game runs pretty well for me with almost all of the EPs and GPs and a few of the SPs.
This is just me thinking out loud, but it would make more sense to set the 64-bit requirement for The Sims 5 rather than changing horses in midstream on The Sims 4. Oh well.