Earlier quoted context omitted.
LibreOffice is good for a lot of tasks but it's bloated, and takes time to start up. Wordpad is great for all sorts of quick tasks when you just need to edit a quick RTF like a poster or some basic letter, and don't want to stare at a ribbon full of functions you'll never use.
LO for Windows launches with a launcher that pre-loads it a boot time. I find Writer to be pretty pleasantly light-weight on a modern computer. A lot of its performance shortcomings are a bit exaggerated especially on modern equipment.
Cold load times aren't terrible on modern systems, but wordpad is much faster. (Microsoft Office isn't great at fast loading either).