I mean, do you mean you had an upright piano (made of wood); and now you want to get rid of it to buy a digital one? Well, that's a bit uncommon, but well...
I guess your neighbors have complained about noises, or maybe you need to sell it for the money...
Well, I don't know.
If you buy a decent digital piano, your playing shouldn't resent.
Decent digital pianos are not casio keyboards; they have a mechanism that imitates the "hardness" of the real keys; and have pedals too; and 88 keys like a real piano.
The only thing that actually changes is the sound.
Acoustic pianos have a full sound that speakers can't imitate; however, this sound is always quite intense (even in pp), so neighbors can complain about the noise. On the other hand, digital pianos have a volume wheel, so you can play very quietly.
Besides, they allow for different sounds (like honky-tonk, harpsichord, fender-rhodes...), and maybe also accompaining rhythms.
So, to be short, a good digital piano doesn't have a different "touch", but does have a different sound.
Hope this helps. Cheers!!