As long as you don't ask people from Jakarta Greater Area, it's actually quite common for us to use local language, either at home or speaking with friends using dialects from that area. Almost all national TV shows are using Indonesian language though, so they can reach wider audience. Only local TV channels will use local language. Most of local entertainment are still using local language too.
Regarding your own regional languages, it's actually such a shame to leave it behind. Different languages will birth different culture and lifestyle imo, and it's a good thing.