what happens when you find a leak a few months down the line (happens to us all at some stage)
what happens when a component fails or you have to start pulling things out as it stops posting one day (another thing thats happened to me )
then there is the upgrade that you decide to get and you cant quite wiggle the soundcard out to pop the new one in (yeh i have done that as well )
what happens when you decide that your going to give that new water block a spin to see if you can shave a degree off the cpu (been there, didnt drop a degree dammit)
and of course changing the fluid as its been in a couple of years and has gone a bit murky
there are quite a lot of reasons, and trust me you will find one once you swap to water cooling
all i have at the low points is a 5 way koolance block that came with a temp probe, there is just enough room to pull it free of the case so it can drain into a bowl
i do admire you going res less but it will be a bitch to get the bubbes out you know ! i ended up with res tops to get round that one