No, it's not worth it for hair growth or other reversing aging effects. It's great for creating a look you can't get from anything else, makes dieting easier, magnifies the effects of your AAS usage so on and so forth.
If you're not going to compete at the highest levels or don't want to be as big and lean as possible (pro level look), don't have a lot of expendable cash, don't want to deal with bothersome daily side effects, don't want to take a shot every single day for 6 months to a year minimum, don't want to constantly wonder if what you got is actually real or properly dosed then just pass on GH.
You can get pretty close with years hard work, solid diet, pharma grade fat burners (T3, clen, albuterol) and a lot of AAS (especially Tren).