Is it normal to end a relationship?

I recently ended my 11/2 year long distance relationship with my boyfriend. We talked on the phone every chance we got and we skyped and texted every singe day. I kept this relationship a secret the whole time from my family and friends. We were great lovers and partners. But recently we began to argue, disagree  and fight a lot. For some reason we just didn't see eye to eye in the important things in a relationship. I Felt that he was a lot more into it then I was. He talked about marriage and living together. At the time, I agreed. So we decided that when I turned 18, we would move in together. As in me move to California. Note: he was 7 years older then I was. I know, don't judge. It felt right at the moment. And this was my very first relationship.

As our relationship began to grow and get more serious, I noticed I was being a little distant and I got overwhelmed and scared. I felt like I wasn't ready for such a big commitment. And I thought I was ready. We talked about it and always fantasized how our life together would be like.

In ways we were so different and in ways we were similar. I think the reasons why I ended the wonderful relationship were because I was scared, overwhelmed, and sometimes our differences got in the way. For example, I am a very liberal free spirited person that wants to do fun things:) I've always wanted a tattoo, motorcycle, go see friends, go on trips and possibly join the military. He wouldn't let me do any of this. He said that people who love each other didn't do those things. And often called me selfish.  But he like "jew-guilted" me and was like ' well, if you really want to you can! I agreed with him and  let it go for awhile. He is very conservative and Iives a mellow life. For awhile i also lived the mellow life. Somehow this way of living screwed me over. Somehow, I lost my friends, I quit going places with my family and I quit being the social person. I didn't thing this relationship was healthy so I ended it. The preveous day before i ended it,we got into a heated argument. Usually we always fix the problem and move on. At this time, I was sick of fighting and moving on. I have concidered ending the relationship a couple times but never did. It felt like I got roped back in. 

So I didn't call him that morning, I didn't text him, nor did I Skype him. The next day I explained in an email why I did what I did. He was heartbroken and devastated. And so was I. But somehow I feel I did the right thing. It's been a couple of weeks now and I opened my emails from him and they all say
I miss you, I love you, why did you leave me, what did I do wrong, why do you hate me now, you were the love of my life, you will always be ,y lover, what happened to always and forever, you promised you'd be with me forever. And all that fun jazz. This made me feel really bad and guilty. I miss him so much and I did love him. I dont know if I made the right decision by ending it.

is it normal That i ended it?