I have had zero issues with the Apple Card and use it almost exclusively for purchases totaling $24,000 each year. I don't even bother with the statements and can reconcile transactions easily just by using the Transaction History. You can pay the bill multiple times each month (in fact multiple times each day if you wish) and the Wallet clearly shows how much is due and when to pay to avoid any finance charges. At least 2% of my purchases are refunded back to the Apple Cash card, which is basically free money.
Sorry you had a bad experience, but your unique situation is clearly not what is seen by everyone. I would recommend it to anyone with an iPhone.