It's a great, non-steroidal drug. It's pricey, but it's not going to shut you down in the same way that steroids do.
Like any other PED, it's an investment in your physique. The cost isn't as astronomical as people perceive it to be. In the long run, most juice monkeys are probably going to end up spending a good deal on sauce... what difference does it make if they throw down a few bills for some GH now and again?
With GH being all the rage, I'm sure a lot are trying it just out of sheer curiosity. Especially those who've been dabbling with PEDs for years and years.