My advice is no - a blog that you share with the public is, in it's very nature, impersonal.
Online, people offer these heavily curated identities and pretend it's authentic and real - when it's not.
Your kids, later in life, as they watch and re-watch you, wonder about you, want to learn more about you - well, it's just my opinion, but I think they'd value it much more if it were deeply personal and specific to them.
You create a blog, a kind of online public diary - and sure, that's fine. Friends, family, will be able to use it as a vehicle to mourn and remember you. But your children will come back to it - perhaps even years later, as they age and become parents themselves.
Me personally, I'd suggest creating an archive of personal one on one messages for my children. Lets say you only have one child, here's an example (and just x2 or x3 if you have more kids)
This is presuming younger kids - but works for older, even adult kids, I reckon:
Who was Mum: where you talk about who you were and your life growing up
Hopes, Dreams, Beliefs: talk about what you wanted from life
Best Life Experiences: share 'em
Worst life experiences: share 'em (might have more value to your aging kids than you'd think)
Mum's experiences with you growing up: share stuff that they may not remember, photos, anecdotes
Birthday Message: (maybe think of recording one for each year, all the way up to 50, even "so you're 21 now ! OMFG that's awesome. Please think twice before going on a drug addled binge and if you do, maybe think about taking a friend with you. When I was 21 I did this crazy bungee jump ... etc etc"
Graduation Message:
Getting Married Message:
Having Kids Message: (this could get weepy, but hey, put your feelings out there for them) - how I wish I could be there to be a grandparent
So yeah, rather than a public blog with a curated identity, I'd consider putting together a very detailed set of deeply personal messages (including thoughts, musings, diary type entries, whatever works for you). I'm sure your children would still value the public blog stuff, but if I were your child, I'd find your personal messages to me to be much more precious.
Sorry to contradict the idea, I'm not pooping on Idea#1, I just think Idea#2 is better. (But also, full disclosure, I think the world has gone batshit crazy, and people are turning into unauthentic narcissists wanting to lie to the uncaring world about their perfect lives --- I'm really sorry if that bias is colouring my opinion, but I think my logic is still sound anyways 🙂 )
All the best, really sorry you got sick - make sure to enjoy your important people too before the end, don't give too much time to a diary when you could be cuddling and chatting.
