[dj-wonk]

Giving "reasons" why a language will be around a while is roughly somewhat comparable to giving "reasons" why a particular business or industry will last. These kinds of comparisons are a waste of mental energy.

Things like languages or businesses last (or do not) largely because of their interaction with their environment -- not because of (a) innate properties or (b) characteristics that we observe at this moment in time. A great language, like Python, deserves praise because of how useful it has been, but let's not get carried away and sanctify it.

Time will tell how long it lasts.

In the meanwhile, I like to use languages that help my productivity (for a particular problem) and don't help me shoot myself in the foot.