It depends on your personality.

Some people are “serial starters”. They have enormous creative fire, feel a burning need to create something new, and once it starts taking form and people start using it, they get bored and move on.

Others are better finishers. They will patiently build out the core until all the required bells and whistles and niceties are there.

It’s very rare to someone good at both, such as Linus Torvalds. Maybe that is a third category, someone who starts a few great things and sticks with them for life?