Sure, you can tap stuff with a hammer, and then get bored. If you want to listen to FM radio, an actual radio is cheaper and gets better reception, if you want to listen to walkie talkies, a scanner is better, or getting a cheap baofeng or a similar radio is even cheaper and works better. Yes, you can play with getting satellite images, but in the end, you look at weather reports online.

The great power of SDR is, that you can capture signals to your PC, so if you're eg. reverse engineering a temperature sensor, you can use the tool to get the signal onto your PC. Then you're done with the first tool and need a few other tools to do all the other parts (demodulating and getting binary data, finding what each bit/byte does, what sequence is used for what, how the checksum is calculated, etc.

I mean sure, it's fun to play with for a few hours, but after you've listened to the local taxi frequency and tried to get some satellite data, you get bored and put it in a drawer somewhere.