Nice room jw
You should not need to be in any hurry to decide which way you're going. This is an important decision, and should be well thought out for what you need now, and in the near future (a few years or so ahead) It sounds to me that you're bouncing the idea of a computer or all in one unit back and forth...that's perfectly fine.
As I pointed out in your GearSlts post (saw this post by chance as I joined here) If you're ok with living with an all-in-one recorder & mixer units limitations, then it'll work for you. Just because many people, including myself have grown accustomed to what a computer DAW can do, it doesn't mean you need it. Hell, I didn't realize the potential until some years after using a computer DAW, I was using it only as a fancy multi-track audio recorder, like I did with my old Tascam multi-track unit. As I learned & grew, I was implementing more & more.
If one has no experience with computers at all (like me when I 1st began recording with one) it's a very big learning curve! For someone who already has been using a computer, then it's much less...still, there is a learning curve with a music DAW, more or less of a curve for those who've recorded with one before.
As for the OT part of this thread.... I don't believe in a "calling" for anything in a hocus-pocus kind of way, ...you either have an interest, or you don't, and that interest drives you! If you're driven to be a singer, then sing, if you want to play guitar then play. Me, I'm a guitar player mostly, but later in years, as I've always wanted, I was able to get everything I wanted to play & record with. I now record myself, playing several instruments & sing. Whether it be vocals, guitar, drums or keyboards etc or all, the more you do it, the more natural it will come, and the better you'll get. This go's for computers DAW's too. I had zero interest in computers for years, when I finally got one, I had zero interest in midi & virtual instruments...well, my interests have evolved along with the technology I had at my disposal.
And by the way, my computers audio interface is my 'everything'..pre-amps, phantom power, direct guitar/bass Hi-Z inputs, drop & drag mixer, analog & digital I/O, midi I/O. I can still use outboard gear, but my interface was expensive and high quality, so I didn't need to buy pre-amps, DI boxes, etc. Some interfaces even have built in FX's. I use Cubase on my DAW and can get by with what FX's come with it.