There are a few reasons that I don’t play MTGO. It isn’t the bugs, I think the interface is actually pretty good, though it’s not optimal. It’s mostly this: I don’t want to pay another couple hundred dollars to buy a deck when I already have such a sizable paper collection.
I would play way more MTGO if it wasn’t so expensive. I think of it as a video game, but Wizards doesn’t. I’m not willing to build a whole other collection at a non-reduced price when I already have a perfectly fine collection in real life. Wizards doesn’t think of it as a video game, where additional money is not needed besides the preliminary payment and any desired in game purchases, they think of it as a second Magic, simply a digital version of Magic: the Gathering.
Would you start a second collection from the ground up when you already had one that was perfectly fine. I wouldn’t.