Yes it is worth it if you allow yourself to enjoy it, like any hobby really.
Do any of your friends have boats? like playing golf with a country club membership? ect ect.
If you have a passion for performance driving and enjoying the experience of aftermarket performance then you should buy a blower kit. They are fairly reasonable (price) and to install and the complete kits such as Vortechs are a start to finish solution. Finding out which kit is best for you can be somewhat tricky due to the feedback of many here, so just take what you find with moderate merit.
I would say you're off to a good start with the two companies you mentioned.
If you have any questions, I can help, other wise get modding!