Why do I see everybody planting their seeds in a small pot and later transplanting their babies into bigger pots?

Why not just plant the seeds into a bigger pot?

because it helps the roots grow out more instead of just growing down

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There's Gonna Be Alot Of Slow Singin
And Flower Bringin
If My Burgular Alarm Starts Ringin

good question and thanks for the good answer i wondered this too i always go from "keg cups" to 1.5 gallon to 5 gallon never was sure why but i have considered cutting the 1.5 gallon out just to eliminate a possible stress but i know how important the roots are

^^well, never really thought of that one

it is really about over-watering and how to avoid it. fact is that you easily over-water a plant in a bigger pot than in a small one. especially noobs tend to do this. and this can be avoided by small pots since they are easier to check then the large ones. plain stupid basically

also use these lil pots less space up in the veg since about 50% of the plants vegged go to waste after first weeks of flower and so the entire vegging can be done on less space too

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keep the thumb green and the gun oiled, !

starting in a 1.5 gal pot isn't a good idea either
seeds really shouldn't be started in anything bigger as a the volume of a normal soda can

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keep the thumb green and the gun oiled, !

this is after they have outgrown there 16 oz plastic cups which is where i put my seedlings I tried using the peat pots i dont like them

oh well then, eh

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keep the thumb green and the gun oiled, !

You shouldn't ever need to put them in 5 gallon pots.VV