I kinda want to buy more VVIP but I don't have the guarantee if this game will still be up for another 10 years. I already have full VVIP in my bag and want to buy more than that but I don't know if its worth to invest more on CF. I already have 14 VVIP, Do you think its still worth to buy more?
Up to you. Nothing will last forever, 10 years, maybe it will stay alive for 10 years, there are other games with significantly lower playerbases and they still exist (CROSSFIRE is still booming in China, etc).
And once the Battle Royale Hype ceases to be, many will go back to their respective games.