is it bad that I'm with a long distance guy who won't allow me to spend time with my family or go anywhere with my mom?

Yes. Its bad. Are you in a cult?

Yes! He sounds like a control freak. There is no reason he should be keeping you from your family. Dump him! Find someone who wants to be involved with your family with you as a couple or let you spend time with them alone as needed sometimes. 

Most abusive people start out by being very nice and then they gradually change and gain control. This guy is bad news. You need to dump him and get back in touch with your family. The sooner the better.

People that want to control your every move start out by being really nice and considerate (at least it seems that way). Once you're hooked into them, their real personality emerges.

This is a warning sign, him wanting to control your every move. Does that seem fair that he won't "allow" you to see someone, especially family? What is he so afraid of? Most importantly, can you actually see that he wants to limit the people in your life until there is no one but him?

Guilt and fear - that's what I'm seeing. I'm not seeing love or even that you like him. Take a step back and evaluate why you feel the need to be with him. If this were me, I wouldn't take it. The person that I would want to be with is someone that cherishes me and doesn't try to smother me with directives on how I should live my life and who I can or cannot have around me. But that's just me.

If you are in a long-distance relationship I don't know how this man can have any control over you?

Secondly, why on earth would he not want you to spend time with your family? He doesn't sound like a very pleasant chap to me, but a nut job and control freak, why on earth would you want to stay with that?

Date someone who is nice and wants what is best for you, who's interest is in maintaining healthy relationships, and preferably someone that you actually meet up with on a regular basis.

Its bad. Magnify this a million times worse if you two were married.

Sounds like a control freak. Believe me...you'll grow to resent it.

Your question alone has the answer.

What is bad .. Is that you don't seem to understand that he only has the power over you that YOU give him. If you enable him to control you and your relationship with your own family .. He will continue to use emotional blackmail to control you... And there is nothing "right" about that. THAT is not love .. not even remotely.

Remember .. this is 'a guy' .. not someone (you even have plans to marry) .. THIS guy will be long gone someday (hopefully, sooner rather than later) .. and your family and 'real' friends will still be in your life. Is THAT really where your priorities fall .. with 'some guy'?