Well, I just prefer it that crooks aka botnet operators can't easily mooch off the currency I'm using.
To me, it's a useful feature ... everyone can decide for himself.
Let's think about it...
On the one hand, some bad guys might be theoretically profit of LTC.
On the other hand, an average Joe with a GPU knows that LTC can be mined by average Joes like him, however BTC requires some expensive, highly specialized devices.
Won't Joe perceive LTC as a more democratic, open currency?
Note that Joe might not fully understand how ASICs work, he only knows that some highly specialized devices he doesn't understand are used to secure the network, and they are produced only by a handful of specialized companies. What if government is in this and it wants to control the currency?
I bet Joe would rather trust his GPU...