Send Invitations even if they can't come?

I created an event page on Facebook and am only sending invitations to people who can go simply because invitations cost money and I don't want to use more than necessary on them. Maybe it's rude, maybe it's not, but it's seems more practical to me than using money on extra invitations for people you know aren't going to be there. That's just how I'm doing it though. If you want to send them invitations anyways, by all means, go ahead! It's your wedding, you do what you want with it!

An STD is a promise to invite/send an invitation. Even if they have told you they can't make it, the proper thing to do is to still send them an invite. Plans could change between now and then, it would be confusing looking like an invite was revoked.

I'd honestly still send one, as long as it would be okay if something suddenly changed and they could make it.

Although I just saw that you sent a STD. As far as etiquette goes, you should send one.

There's a few people that I was certain would not attend or they told me they could not attend. I still sent the invitation anyway. One was confused as to why, I just told them to mark the RSVP and not worry about it - it was purely just to be nice and let them know they were still welcome if plans changed.

We're still sending a few courtesy invites to family that we know will be unable to attend (they live across the country) but whom we are friendly with and would celebrate with us if they could. It's our way of saying "we wish you could make it and we're thinking of you!" They will usually return the favor with a small gift or a nice phone call.

I know like 10 people who cant go. I’m still sending an invite. What if they change their plans? You never know

In general I think it's still nice to send an invitation as a courtesy, but it's not entirely necessary. I sent one to my grandma, who can't make the international trip, because I knew she would treasure the invitation and want to feel included. Meanwhile, I did not send one to a friend who previously declined who is in the process of moving, because I know the last thing she'd want is more clutter laying around the house. I think it's okay to go on a case by case basis, and just send one if you're not entirely sure.