As someone who has played guitar at a beginner-intermediate level for 15+ years and started learning piano within the last few months, why don't you start now?

As someone who has played guitar at a beginner-intermediate level for 15+ years and started learning piano within the last few months, why don't you start now? My extremely limited guitar knowledge has still given me a head start, and I've found that the common advice - that music theory is simply much easier on piano - is very true.