Love it or hate it, Downton Abbey has successfully filled a need for an alternate reality where not-so-happy endings get a second chance, with just enough historical references to makes us think that perhaps we too can deal with the horrors of our own time, even if we have to do our own ironing and the closest thing to Mrs Patmore is Deliveroo.
If you've somehow never heard of it, Downton Abbey is basically a social and political study of early 20th-century British culture in the guise of a period drama about rich people, starring the incredibly funny and cool Dame Maggie Smith as well as a lot of other people who are less important than her.
If you haven't seen it... try it. It's addictive -- not in the way binge watching video can be, but more in the way that we return to great stories and experience them again and again with the knowledge that we won't be let down, because the story will sustain us, like Star Wars with butlers. (C-3PO! hello!!!)