I wouldn't dream of pooling income if sharing a home with a partner.
What about a husband? That makes a big difference to how things pan out if it goes pear-shaped.
The first row I almost had with my now husband was about organising finances. My parents had always had separate accounts (Dad gave Mum the housekeeping by transferring it into her account), his had always had joint, although some "mirrored" savings accounts in sole names.
We have a joint current and savings account, plus some mirrored savings in sole names. And it has been useful. Because there have been periods when he wasn't working and I was, periods when I wasn't working and he was, periods when we both earned about the same and periods when one earned more than the other.
Throughout it all, household bills were paid and we both spent what we fancied on things that were just for us, but with the understanding that if it was going to be a significant spend we would discuss it first. Actually his threshold for significant spend is lower than mine... he asks if it's OK to buy something, when I've already bought something that cost more without asking him.
And if it did go pear-shaped, well I know the passwords to all the online accounts and he doesn't.