Like everyone, I harbor fantasies about how interesting I am, and if I run into you at the pub, I'll talk your ear off about the places I've been and the things I've done, but if I'm objective about it, none of it is particularly praiseworthy, and it's hardly going to make me stand out to a potential employer. Any attempt to dramatize my life or skills is going to reek of pomposity, even the rare bits that are somewhat unique.
I'm not a designer. I'm not a visual person. Any attempt to fashionably describe myself is going to backfire. My resume is a good overview of my skills and experience, but if I try to turn that into an online portfolio, it's not going to be any more impressive. If I don't keep it up to date, and remodel it constantly to keep up with contemporary fashions, it's going to make me look old and out of touch.
I have an exceedingly common first and last name, so I'm hard for employers to find online. I'm happy about this. I don't want employers scrutinizing my social media presence, as benign as it is. I would never give a potential employer any of my online IDs if they asked.
If you've got something to say or show and you want your own home page, go for it. I don't think most people actually have enough interesting content to warrant it, though, and I'm pretty sure that I don't.