Do-It-Yourself doesn’t always mean cheap, usually just cheap in comparison. It is more about the self-satisfaction of creating your own items to enhance some part of your lifestyle.
I always loved crafting and making items I could use daily that were similar to what I found online. It trains your eye to find inspiration in everything and think about what you really are capable of if you set your mind to it.
DIY is nowhere near professional and just for personal use, but still always worth it if it is done right.