Coins in the past have been tailor-made to be ASIC resistant (see Vertcoin), but you can't stop development unless you want to change your hashing algorithm every few years. X11 was initially supposed to be ASIC resistant, but there are now FPGAs and ASICs for DASH.

Though if you are interested in pursuing the "One CPU, One Vote" model as envisioned by Satoshi, I'd check out Monero.