Peace HOPE.
Before I start to eat I say: "Thank God for food" instead of "In the name of God" (Bismillah). It is the same thing.
Alright. I have read a Russian translation of the Quran and as I understood; it says to pronounce it when you are sure that it may won't happen in the future, that is to say do not promise about things which you are not certain without adding "If God wills". In the verse 22, surah 18, it says to not guess about things which you are not sure. In that case it is good to pronounce it; it is similar to say: "I'm not sure".
Check this:
"And do not say of anything: Surely I will do it tomorrow,
Unless Allah pleases; and remember your Lord when you forget and say:
Maybe my Lord will guide me to a nearer course to the right than this." - 18:23-24, Shakir.
What do you think?