Third you can get an award ticket. Two months of your current spend will get you to a lot of places in the world in comfort. As an example 67.5k AA miles will get you to Hong Kong one way in F on CX. Coupled with sign up bonuses you be living large.
Could you elaborate on this a little bit? Two months of spending on my 1.5% cash-back card is worth about $1500. On the United 1.5 miles/dollar card, it's worth 150k miles. Can I do more with 150k miles than I can with $1500?