The answer to that is that, in a short period of time, you will experience a sense of and create a super SDR transceiver which can be compared to other equipment in a considerably higher price achievement range.

On top of that, there is the sense of building something yourself which is highly valued in the circle of radio amateurs.
Many thanks go to Dr. Pavel Demin who has written the software that made it possible to use Red Pitaya as a SDR transceiver and to the Red Pitaya company for the excellent measuring device, which it really is, and nice and friendly contacts I had so far.