Yeah its absolutely make sense to solo mine ETH with ASIC , the question is what kind of asic you have for solo mining 
If you have a few Bitmain Antminer E9 (3Gh) , go ahead and mine solo , but if you have something with less hashrate , better if you joining to a mining pool with your asic harware.
Just a side note , those E9 ASIC miners is around 30.000$ each as of right now still cheaper than build a 3GH mining farm from 30-32 rtx 3080 cards , or 26 rtx3090 cards
Good luck with your solo mining adventure , and good luck to get those 30k+ ASIC hardware's
If you have a few Bitmain Antminer E9 (3Gh) , go ahead and mine solo , but if you have something with less hashrate , better if you joining to a mining pool with your asic harware.
Just a side note , those E9 ASIC miners is around 30.000$ each as of right now
still cheaper than build a 3GH mining farm from 30-32 rtx 3080 cards , or 26 rtx3090 cards Good luck with your solo mining adventure , and good luck to get those 30k+ ASIC hardware's