alt Hacker NewsIt's like asking whether you can do serious photography without Photoshop/Lightroom or create games without Unreal/Unity. The answer is you can, but do you really want to? Your most important goal is to use a tool to get the job done. The tool is a method to get there, not something you want to fight with.
It's more like when kids start taking music lessons. Most parents aren't going to spend more than $100-200 on an instrument, in case the kid decides they want to quit. But the entrypoint for virtually any instrument that you could call "playable" is usually north of $500 (which also competes against a massive supply of used instruments from people that spent $500+ and then quit).
There's nothing wrong with playing around with Reaper, Garageband, BandLab, or any of the more entry level "instruments" in this analogy. Preferable even, if you don't want to blow hundreds of bucks on a program.