It irks me that building with wood blocks can cause such heartache, which results in "smart" players being forced into using ugly cobblestone for all early-game builds.
One of my most memorable play-thrus of a modpack ended up similar to this poor fella's...
https://www.reddit.com/r/Minecraft/comments/5ka3ij/i_hate_lightning/
Of course, in my case, it wasn't lightning. Oh no. I was playing on a server, and someone left me a "gift" in a chest. Silly me, I had no idea what sort of havoc a single block of Railcraft's "Firestone" can cause the instant you pick it up into your hands. I found out the hard way. Looking back, its highly hilarious of course, that recollection of me frantically trying to put out all the little fires in vain, and watching as it slowly but surely consumed my entire house. That was the last time I ever built with wood. A sad day indeed.
Yes, I do realize that Forestry was thoughtful enough to create wood blocks that are fireproof. The problem is, you can't access those blocks during early game when they would be most appreciated, and when wood is most likely to be used as a building material.