When you implement an interface there are several philosophies when you encounter « dilemmas » (should this button be red or blue? should it…?):
- Either you make a choice (as a designer), and you decide. You thus get a product that has a certain opinion, which doesn’t necessarily please everyone but which is coherent as a whole. It’s an approach you find at Apple, Elementary OS (the Linux distribution), WordPress, etc..
I’ll put a quote from the WordPress site that is interesting:
- Or you don’t want to make a choice and you add an option in your software’s settings so that everyone can find what suits them. I mentioned Microsoft because they’re generally more on that side (not always).
For my part I’m more into option 1 with Gladys 4; of course it has to be done in a balanced way (settings are not forbidden), but I think it’s up to the interface designer to make choices, and not for the end user to suffer from a lack of inspiration from the designer/the designer who doesn’t want to take risks 
Anyway, in this case, I’m perfectly fine with adding a decimal!