BIAB is a natural progression from extract. It’s similar to steeping on a larger scale, so, it’s easy to understand. In fact it is so easy, many new brewers skip extract now. Also, the only new equipment needed is a bag.
So, I recommend BIAB as an intermediate step on your brewing journey or a final destination.
I have fly sparged, batch sparged, and BIAB brewed. Best I can tell, the beer taste the same for all three. I BIAB now, but, my journey is not over.