LOL. Nice try, but they are not going to end TS4 just because you are in a hurry for TS5.
They are finally making new packs and I hope they continue instead of ending TS4 and then just creating Pets, Seasons, University, Generations, aliens, vampires, and other supernaturals again in TS5. Not all simmers just want to have their sims get married, have them abducted by aliens and bitten by vampires, pump out babies, give them some pets, send them to university, and then die.
There is a whole lot more to life than just that. The world is a beautiful place with people of different ethnicities, skin tones and cultures who wear different styled clothes and live in different type homes with different architecture. Since this is a life simulation game, there is nothing wrong with including these differences in the game along with different hobbies, lifestyles, interests, etc.