rite now i only take protein shakes but am considering creatine. i want to build mass quickly. is creatine important? i heard its only useful for giving u enery to lift more and longer but if thats the only use then i rather not buy it and just rely on willpower for that extra enery booost but if it also helps buit muscle and gain u mass then ill buy it.

For the first few seconds of maximum intensity work, your body uses creatine phosphate (which it produces naturally). Supplementing creatine mainly keeps your creatine levels topped up so you can work at maximum intensity for a longer period (a few seconds more). Will power can't overcome this as its a chemical process that occurs in your body. Once you've used up your creatine supplies, thats it. You then need to rest for a couple of mins to allow the creatine phosphate to resynthasise.