With acoustic guitar, you don't need an amplifier to be able to play or practice. That said, you can go anywhere to play or practice with it. Disadvantage is that in acoustic guitar you have to press a little harder the tip of your fingers while fretting chords and that will give you a lot of discomfort, or soreness to your fingers, so to speak.
With electric guitar, you don't have to press hard while fretting. As stated above, with electric guitar, wherever you go, you have to bring the amplifier with you 'cause without it, the e.g. is useless!!
However, the truth is, everythng that you learn guitarwise, applies to both acoustic and electric.
So, make you decision based on the above comparison!
Good luck and happy guitar playing!!!