If i could, i would train at home. Hands down.
But... I just don't have the equipment too. My garage is on a sloping surface (in two directions) and that definitely throws out squats. My little bro bought a bench press, and that rocks about like a drunk in high swell.
I spent over a year training at home just deadlift, overhead press, and Kettlebells (look 'em up if you want, they're a little weird). I have made decent progress. But i need to start squatting regularly, and i need a rack.
Advantages of home:
- My music. Britney Spears is not good training music.
- I can spend as much time as i want on a piece of equipment. 10 minute rests between sets? Hell, if i need too, i do so!
- Chalk. Though, i have found 2 gyms in Sydney which OFFERED me chalk. UTS and UNSW gyms have lifting platforms and encourage it. Though, you can sneak it in the 'Chrome and Fern' clubs like Fitness First, etc (which I'll probably be training at this year. *sigh*)
- Don't wait for equipment. No one is curling in the squat rack (a terrible insult to the gods of weightlifting).
- Simply no other people. People suck.
- If you have the money to burn, you can get dire equipment that no gym in Sydney has. Like the Glute-ham Raise. This point could also be called 'exotic equipment'.
- Some people, if they've got it, flaunt it. By this i mean, I have a friend with a big deadlift, but he says if he trains a gyms he sometimes exerts himself too much to 'impress the girls' (sad, i know). I.e: At home, you typically stick to your program.
Advantages of commercial gyms:
- Equipment you can not afford/accommodate yourself. Either machines, bumper plates, whatever.
- Dumbbells (assuming you don't have loadable ones at home).
- Some people get 'in the zone' at a gym. If it works for you, use it.
- Training partners can be made, or met at gyms. But then again, good friends can come to your house.
- Provenance's! I study at UNSW, and using the UNSW gym is just easier right after classes, than a long bus trip and walk home; which may smoke my legs in a undesirable fashion.
- If you're into it... Social. But damn, if I'm waiting for some equipment and you're diddling around with your bro' between sets. I'll.. I'll... well, not much. But i don't like it!
- 'Globo Gyms' like Fitness First have 1 thing positive about them. Locations. If i study in one suburb... work in a another, and live in a third - I can train at all their respective locations.
It comes down to weighing up what is useful to you at this moment in time, and what you desire/compromise. I may end training at Fitness First this year... Woe is me.