can't hit those stabilizer/balance muscles with machines. Well, unless you do a dump truck of steroids.
thats why u mix barbell/dbells,machines ,change it up.each workout use some of each,others do all free weights.
This^^^Bob Chick after retiring use to say Squatting, Benching and Dead lifts was stupid. That's because he got older, weaker and lazier(not smarter) His ego wouldn't allow him to do these exercises with much less weight because he didn't want to look like a pussy. So he moved to machines and kept the dosages high and got away with it(in clothes). Machines basically take out the central nervous system. Half the amount of muscle fibers are hit with machines. Can you build a great physique with just machines? Probably. But I'd bet the house that muscle density and "graininess will suffer greatly...
Just lift weights however you want and keep your dosages high and you'll grow, period. No need to overthink training.
True...but not at the elite level...It's not like power lifters are working out only on machines thinking they can get stronger at the bench or squat or dead lift.