probably because its a massive hassle. when you convert your website to force https you have to change all links to https in order for it to work.

No you don't, it's simply the "port".

No, vBulletin requires only a few modifications for it in certain fields, to change from http:// to https:// and you're ready to go.

Moreover, (probably the forum uses the old grandpa Apache's http server, it requires you to save key & cert. somewhere and include it thro the conf. (I believe its done that way, apache is really into "making it easy" and that's how its done in nginx, I believe this as easy as it gets)

EDIT: yes.
You modify the virtual host file and give paths to the key & cert

If you don't know how domains work, then maybe you should learn that...

The date of expiry is simply the date the domain registration needs to be renewed. Nothing to do with any sort of end-date.

Good to know man.

LetsEncrypt gives the tool Certbot that does it all for you almost.

Or use .htaccess to redirect all http to https?

Lol forums expireing in 2019, what the hell is $9-14ish a month for a .com domain. Just cause the whois says it is expiring then does not mean that it will.

And as for https. With letsencrypt around it is kinda stupid to not have https on the forum, homepage, and wiki. I mean its free now days. So why not? And for the longest time this forum was behind cloudflare, https is even free through them.

I assume things will stay how they are, unless there's a motive to do so.