Is the 15 Buttoned Stream Deck Right for You?

The sweet spot for most people is probably the 15 button stream deck mark two. For a smaller stream deck, to save buttons, it might be better to use pages than files. One of the things people said would be cool is that i would be able to map things like tex expander snippets or keyboard mistro macros to the different buttons. I signed a couple of maccrows to buttons on my stream deck and during the live show last week, just days after getting it, used the buttons to trigger the mackrows. So this was a thing i couldn't figure out. If i already had a keyboard a short cut, why would it be better to push a button?