Can it buy it? No. Can it buy things to make it for you? Yes.
Honestly, the sheer possibility it creates for you is enough for you to make your own happiness through it. No more jobs or working, can let you truely live your life. Whether it be buying a chalet in the mountains and having awesome winters, letting you explore another city to give you the opportunity to ingrain yourself in it, or allowing you to host the most epic games of paintball/go-karting ever created. These are just a few ideas off the top of my head, but honestly, I can't think of a problem coming from having an unlimited amount of money. Except maybe all the new 'cousins' I'd have that I never met.