In many African countries, the European colonists did quite a lot of good. The French for example, built roads, hospitals, schools and introduced refuse collection and access to clean water. (Senegal, Cote d'Ivoire for example)
Once Independence was granted, corrupt indigenous politicians moved in, and bled their countries dry for their own ends. They haven't maintained the infrastructure, many live in Europe and hardly ever visit the land they 'govern'. Private medical facilities are run only for them ('the rich').
I've heard many times people saying they were 'better off under the 'whites'!