I am all for wirelass lans!
No doubts about it.
Since i got my wireless router here at home, i can't use cables anymore.
Less speed? Yes, it's slower, but it fits my needs, i don't download torrents and such, but for the other things (gaming, surfing and downloading from ftp/http), it's very stable and very confortable.
I hate having cables all around, i'm even thinking of getting myself a wireless keyboard.
I don't like to walk into a room and have to either step on a bunch of cables spread through the floor, or have to be jumping around to to step on them.
My friends here at home use cable, because they are constantly downloading stuff from torrents, and feel that ethernet is better for them. I hate that idea.
At my parents' , i have to use ethernet, and i constantly miss my wireless router.
I mean, not having to have cables all around, being able to take the laptop anywhere in the house (with wireless, i can wake up in my bedroom and have internet, without needing some 30-meter-long cable spread through my corridor.
About the security issues, i'm not that afraid. I can't use wpa
because my router doesn't support it, but i have wep, and i feel quite secure since there's only one more wireless network on my area.