Wireless N has made me lazy. I use my laptop's (One from work, and my personal) for everything. Mine is a Dell XPS, which sadly, means I can't use a docking station. In the past, to move large (2-8GB) files, I would have to connect to the network via CAT-5. That alone made wireless lackluster for me.
My laptop however came with a "free" wireless N card built in, as such I decided to buy what at the time was one of the cheapest N routers. TrendNet "gaming" router, which also included a free 8GB flash drive (Woot NewEgg!) for dirt cheap already. I honestly have never used the router portion of it, however the wireless access point is all but amazing. It had my only gigabit switch (Just picked up a 16 port D-Link Gigabit, RIP Cisco 2924, you won't be missed) so all of my file servers resided there.
Cross wireless speeds from one or two rooms away made it more than worth what I paid for it, I would gladly pay double at this point (Though I'm keeping my flash drive!). A few weeks before, I paid around $250 for the Linksys duel-band flagship, but sadly after dealing with Dell and "Well.. it /should/ be ready on XX date.." I cancled and bought this one.
Mine won't be as fast in the long run, but the change to wireless in cost me a total of $50 (If I take off the 20-30 for the free thumb drive..), with speeds of around 130Mb/s (Up from 20-30 from my /very/ old WRT54G).
The only down side, about once a week, my laptop loses my wireless card (which just requires a reboot), but that's a Vista bug.
Short version: If you have a wireless N card from a new laptop/desktop, the cheap routers/access points are a very VERY good upgrade.