Whether you use it professionally or not, Photoshop is not worth how much it cost. The reason people pay for it is because they know they can turn right around and charge their customers for having it. The people that use it do so because of style over substance. They know that their clients want someone that uses Photoshop not GIMP or some other program they have never heard of.
People use Photoshop because they have to because it is the industry standard. It is a verb now. No one says photo edit, they say photoshop.
Paintshop Pro X2 is $55. Photoshop Elements is $75 which is a drop of $25 the last time I checked. The whole reason that Adobe came out with Elements is because they know Photoshop is way overpriced.
After the prodding of the folks here a few months back, I just buckled down and used GIMP. Haven't had one single thing that I have not been able to do.