Sorry, but I can't agree that it is EASY to do. Depends on whether you haven't got anything else to do (like a JOB) for at least a few days. You can spend a great deal of time doing emails and calling Member Services - it takes time. At poular times of the year or with a complicated arrangement it can take lots of time.
I'm not a big renter because we usually use up our points. However last year due to a large family group backing out and then some unexpected illness, we ended up with points we couldn't get used. I had a couple renters that were just lovely - wonderful people and you know who you are. We emailed, we booked, they paid and they traveled. I had one potential rentee where we couldn't find space available when she could travel. No big deal, it happens.
On the flip side, I had three in a row who basically wanted to play "Let's Make a deal". Everything from one who agreed to $10/point and several sets of arrangement emails later, wanted the price lowered because there were "posts on the Board for $7" and they had the trip booked at a Days Inn and thought I should beat that, to someone who had me making long distance phone calls to them and calls from work to MS for a rather complicated ressie who later left me a phone message that it wasn't going to work out on their end. From their posts on the Boards later, it was obvious that they cut a deal with someone else.
Don't get me wrong, anyone has a right to get the best deal they can. But agreeing to a deal, having you spend time to get their arrangements made and then trying to re-negotiate is just a pain.
So, just like the "Buy where you want to stay" debate, can renting be done smoothly and pleasantly? Absolutely! Should you buy with the thought that easy renting is guaranteed? Absolutely NOT! You can get jerked around.