I can't make up my mind, and Dad's voice keeps telling me what I have is fine, so why would I spend money on something I don't need?
Because it would give you joy! And the world is a bit short of joy sometimes.
If you can afford it and you'll ride it, take your joy! There is no such thing as "too many bikes" if you ride and enjoy them all. (Says a woman with 4bikes and half a tandem).