Even if UASF will create altcoin then be it.
.....
I will use BTC as store of value and UASF to play casinos, pay for stuff. Same time let original BTC be original BTC.
You don't have a clue. UASF won't split it's a softfork. Some stupid miners like jihad and BTU bovine can ragequit and create their altcoin BTU, but it will be just alt like LTC, no more