Ive been there OP. I would exclusively make my own decks and get pissed off when I lose to netdeckers. I ended up hating the game and quick for 2 years. Recently came back and have mostly enjoyed it. Wild is a my preferred format because I have most of the older cards, but it is so toxic right now with flamewaker mage and big priest being majority of opponents that I'm taking a break with standard and arena.
I actually got to legend for the first time after my return, and hit it on both accounts 3 months straight. I don't use netdecks still, some of my decks are very close, but either because im missing a few cards or I am teching against what I see mostly I have made some changes and they have worked pretty well. I am having a much better time, even when I do try to make something obscure like Reno Keleseth minion based priest deck or miracle beast hunter work.
you can also take advantage of some of the netdeckers. I lot of people playing t1 decks in my games have seriously misplayed with hunter, paladin and secret mage by only going face before they eventually lose the board and the game. Occassionally they are rewarded for that playstyle, but I am mostly able to turn those games and win.
One of my biggest issues besides flamewaker mage is the bots i see a lot of time on ranked ladder. those mother fuckers that just hero power and rope every turn for free exp are excruciating. sure, they are free wins, but in the time it takes to deal with that I would have played and possible won multiple games. I've seen those things at D3 before. they are not only getting free exp, but also free wins which is bullshit, and there is no way to report it ingame so they will continue to do it. At least the old pirate warrior bots you had a chance to lose, but if you lost it was only turn 5 anyways and games were only 2-3 minutes. these take like 10+ minutes against odd warrior bot that drops a taunt and hero power every turn..