@Barmagalot-spot metering uses a metering zone in the center of the frame, so unless you use AE-Lock (and even then, I am uncertain if this locks TTL exposure) you are creatively limited as to where you put the subject.
The other problem with using TTL is that if you get good results, it is hard to diagnose how or why they have occurred. It is hard to replicate the recipe...There are simply too many potential settings to know why the image is well exposed. Hence it tends to limit the actual process of learning how exposure works.
Manual exposure and manual strobe settings are actually simpler to use. Once you have a setting that you like, you can repeat it as often as you wish! You can't learn manual exposure control while shooting TTL!