I have a subscription to Holfood and I love it. It definitely makes life easier. For me, the advantages I get from meal replacement shakes are
it saves me from having to decide what to eat so I can put that energy towards things I actually care to do
it’s not very filling, so i can have a shake fairly soon after a solid meal and fit more calories into my day
Probably much healthier than any other meal I can make in the same amount of time
Very tasty in my opinion, but that’s down to personal preference
Makes solid meals much more enjoyable because they’re no longer mandatory, you don’t have to eat so much that you get sick of the foods you normally enjoy, and you can choose your solid meals to maximize enjoyment rather than nutritional value
The main con is that it’s expensive relative to cooking for yourself. But if you factor in the time savings, it may not actually be any more expensive.