Reading this thread has made me wonder whether its worth the investment both financial and effort to get a PPL!
Firstly, you need to be able to afford it. The mystical desire to take to the skies doesn't cut it in the real world. If you are financially struggling to do each lesson, then forget it. You need some 10 grand to get the PPL, then another 10 grand to do some serious flying, and after that you will have an idea of whether it is for you or not. It can be done on less, especially in the USA, but not that much less.
Next, why are you doing it? Do you want to do something specific e.g. aerobatics or long distance routing? If so, these are definite objectives which can be met. But most people who enter the PPL sausage machine don't seem to have such objectives; these are the ones who tend to give up early.
I learnt to go places and have never regretted all the hassle for one moment. But I would do it differently if I was doing it again.