There is an enormous history of tonal music and so much of it is beautiful and well-crafted.
The vast majority of that beautiful and well-crafted common practice period music lacks the kind of uniqueness or character that Beethoven at his best or Wagner at his best brought to it. I think there's a whole universe of tonal pieces of music one can compose to fill the void left by Beethoven's and Wagner's deaths in particular.
I don't mean that you should imitate them, I just mean if they had lived longer they would have proved again and again that very new, very unique stuff is still waiting to be discovered in the tonal universe.
You can discover some of it using your own voice, so why wouldn't you?
You can't discover it if you have this strange notion that tonal music can't be new or original just because there was a brief period in history when very sophisticated composers completely avoided tonality .... an already closing era, due to the smallness of the atonal universe. I think Bartok was the best atonal composer and most of the rest of that kind of music is not something that can be deeply appreciated even by most musicians, due to lack of character in the music. I don't mind ugly music if it sounds unique, like Bartok's pieces that were used in The Shining (Music for strings percussion and celesta). But if it's just pretty music that happens to be atonal, why even bother? Of course, the same can be said of tonal music, if it's just pretty tonal music that some people happen to like, why bother? As you said, there's so much of it (as there is of atonal music these days).
The point here is that you have a false opposition between tonal and atonal music. All that really matters is whether the music is unique, not whether it happens to coincide with the expectations of a fractured musical culture in a world where the weight of tradition has become so great that it has broken and no longer matters as a whole, because it can never, even in principle, be assimilated by one person and experienced as a whole. You can't hear Mozart in the way that Mozart heard Mozart, unless you limit your musical experiences to pre-Beethoven stuff, so this already makes it illogical to speak of one culture as something that truly exists today.
Many people do something of that sort -- limit what they listen to -- even if not that extreme. They don't require very dissonant music to get the same effect as someone who listens to atonal music a lot. They might even be physically unable to listen to very dissonant music due to finding it nauseating. This would mean they are missing something, but it would also mean they are getting something you aren't when they listen to older, less dissonant stuff.
I personally think it's a richness, that we now have an age where all these different musical backgrounds are possible. It's great. And it's great that so many are composing excellent tonal music again.