There are some good points in the first two posts, but since you aren't very clear about whether or not you are planning to fly professionally, I'm going to say this is a two-pronged answer.

First, enjoy learning to fly just for the sake of learning to fly. Enjoy the process of achieving new skills, and progressing from one rating/certificate to the next. Continue for as long as you enjoy it.

Second, flying for an airline is a different thing altogether, because now you are combining the flying with the J-O-B. Some pilots get to the airlines and decide that they hate it, and it can be for a myriad of reasons: pay, crazy schedule, living out of a suitcase, family pressures, etc. Some will love it for a myriad of reasons: the travel, the adventure, the fact that every day is different.

In time you, you will have to decide what is right for you.