saftala, you said,
As Jews we should be thankful for everything we have every single day, not just 1 particular day. After all the first thing we do when we open our eyes each morning is thank Hashem with Modei Ani.
Don’t you say “sheh’hech’eh’yanu?” If, so, why do you say it specifically on Yom Tov and not every single day as well (barring some special reason)?