Part of the fun of making a new swim suit is to take a flat sheet of fabric and to turn it into a 3d object that defines and is defined by the part of the body it is worn over.
There is pleasure in repairing and modifying things, taking something that no longer works for you and making it good again. An item that you have had some time may have memories attached making it something that you value and being unable to continue using it may be sad for you. repairs and modifications, however difficult bring that item back into use.

If anyone wants to make their own suits I have the Stitchboy Patterns on my cloud drive and can allow access.

Years ago I tried to make my own suit, but it is was not the right fabric. Crazy stuff, I think I would rather pay someone to make my suits.

Ok I'm super late to the discussion, but I think making your own is a great idea if you have the skill! Not necessarily for the convenience or the economy of it (Idk how that plays out), but for the sense of pride and having a direct influence on how the suit looks! I'd consider doing it.

Plus, think of the pride you'd have when it's done, and then if someone compliments you on it and asks what brand it is, you get to say, "Oh, *imaginary hair flip because guys' hair is usually too short* I made it myself" and they instantly worship your mad skillz. :)