You are Impatient.
The main benefits of Faction life are a steady paycheck, access to faction vehicles, ships, etc, and protection in a "Herd"
And trust me in this game you want someone to watch your back.
Being Freelancer means your your own boss. You can do pretty much what you wish unless it's something only a faction can do, like Mine.
Disadvantages of being in a Faction include the fact that someone else can tell you what to do, some factions are backstabbing, and you will have people who never met who want to kill you.
Disadvantages of being a FreeLancer, No steady paycheck, any/all governments can arrest you for no reason, with no possible repercussions. You can't build many facilities and station types. And you will have people who you never met who want to kill you.