I have a tassimo machine which i bought because I like an espresso now and again, but find making and cleaning a proper machine for one small cup of coffee more effort than it’s worth.
The espresso from it is great, you get that proper crema on the top. However all the other types I’ve tried like americano, cappuccino, macchiato etc are pretty average. If I’m having a longer coffee I prefer to use a cafetiere.
Also feel bad about the waste but at least the tassimo pods are recyclable.
In short - worth it if espresso is your drink (works out about 20-30p per time), otherwise don’t bother