Why Don’t They Launch Rockets From Aircraft?

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Air launching is perhaps one of the most tantalizing concepts for launch vehicles. Use an aircraft while in the atmosphere so we use the atmosphere to our advantage to lift and accelerate a rocket and then just start the rocket in the upper atmosphere while already at a high velocity!

It honestly feels like a no-brainer. So why don’t we see more companies pursuing this? Or for that matter, why are pretty much all the programs that utilized air launch for orbital rockets no longer in existence?