

Since the development is faster, many of us can pinpoint a bug and most of them are targeted very fast and solved very quickly. The memory footprint of LibreOffice is less than OpenOffice, so it helps computers with limited resources. I for one made about 50 students join Ubuntu just because LibreOffice not only supported older file types, but had better support for doc and docx documents. LibreOffice covers many file types that I needed for many years and OpenOffice did not offer. This is the reason many of its developers simply left and created the because they believe in the open source idea of sharing without limiting and knowledge before money. From VirtualBox not offering USB support (Yes I still remember when VirtualBox was installed and you had USB 2.0 support from the start) without the extension, to MySQL changing parts of its Licence, to OpenOffice changing many development aspects and where its heading was. The move from OpenOffice to LibreOffice was basically (And this is my personal opinion) because Oracle is simply a not so friendly open-source type company that since the moment they touched everything Sun had, it became to some degrees, unfriendly for the open source user (VirtualBox, MySQL, OpenOffice and Java to name a few). Now for my personal opinions over this based on experiences with both and since the creation of LibreOffice: Trying to work on OpenOffice, knowing the above points is leaving many of the things LibreOffice has done and working twice as much to implement some of them back to OpenOffice.

LibreOffice had many features, updates and commits made that were much better than OpenOffice and it had a programming rhythm that was and is faster than the one OpenOffice has. When the Apache Foundation took over, it was already too late.

Staying with LibreOffice gave some guarantee to all Distros that the next version would not magically change licence and try to make them pay for it. Many of the changes users have asked for years with OpenOffice were implemented in less than a year in LibreOffice (Many types of formats for example) LibreOffice Development is several times faster than OpenOffice which helps users and distros get better performance, stability and features ready for when a new distro version comes out. Assuming you read What is the difference between OpenOffice and the newly created LibreOffice? (I was going to mark it as duplicate but your question is more of a why Ubuntu and others still use LibreOffice) the differences right now and possibly for the future are:
