Maybe ETH is the best altcoin right now because of its use cases, trading volume and market capitalization. But before ETH got into that, it was overtaken by XRP a few times. For now, this is the most likely altcoin that is worth to DCA other than Bitcoin. However, it does not guarantee that ETH will be the best for long.
And speaking of that, I did DCA some ETH back then when it was still hovering around $1k or more that time but eventually because of my ignorance and not transferring it to my hardware wallet, it ended up got hacked last month in my Metamask without having any clue at all.
I’ll just wait again for a pullback before starting to DCA some ETH again but it’ll be in my hardware wallet this time around.