Reaching the "next level" is a meaningless term. Does that mean I do a seated overhead press on a Cybex machine instead of dumbells at home?
Whether you reach the "next level" is entirely dependent on your dedication.
Here's the advantages to a home gym:
1.No monthly membership fee, in the long run, you save money.
3.Your gym, your rules
4.No waiting on assclowns to get off of the equipment
5.No assclowns period
6.Time saved going to and from a gym
There are downsides:
1.Not being able to look at a ladies ass on the hamstring curl machine
2.Not as much equipment for certain excercises (cable machines, though dumbells can certainly do this)
And the other points made on this thread.