Having custom clothes made is more focused and less unwieldy than shopping for mass-produced garments. When you shop off-the-rack, it can be challenging and tedious to find something that really fits your personality and needs. If you are not someone who enjoys shopping, this process can be painful.
When you have clothing made for you by a tailor, you will have something that is specially crafted for you instead (the clothes fitting you as opposed to you fitting the clothes). With a tailor and the bespoke or custom route, you have a timeline of when your suit will be complete, and then you just go pick it up.