About 40% of energy production in Germany is still coal, and 15% nuclear. Nuclear will be shut down by 2022 and coal will be shut down more or less quickly depending on politics. This means that Germany will be looking for a replacement for over half of their energy production within the few next decades.
There is not enough hydroelectric capacity in Germany, so the only viable solution is gas -- in addition to lots of solar and wind. Hence Nord Stream 2. Germany wants to have multiple options for gas providers in order to negotiate good deals.
So yes, gas is definitely the future of German energy production, unless something completely unexpected happens.