As other commenters have mentioned, Elon has stated that they plan to keep the first one ever returned on the ground. Reflights won't happen until they land ano

As other commenters have mentioned, Elon has stated that they plan to keep the first one ever returned on the ground. Reflights won't happen until they land another rocket [1]. They have done a static test fire of the F9 core, where they run through about the first several seconds of a launch while holding down the rocket with large clamps. In that static test fire, everything was mostly nominal though they did mention fluctuations in one of the nine engines. Elon has stated that the fluctuations may have been due to a small amount of debris that entered the engine during the landing procedure. I share your sentiment, though! I absolutely cannot wait until they fly their first mission with a re-used core! [1] They have a launch of SES-9 on Feb 24. It's been stated that they may attempt to recover this rocket, though it sounds like if recovery is attempted it will be a fairly low-likelihood of success attempt.