Someone asked me yesterday if I believed that a couple should never get a divorce (no matter what).
I answered by saying there is a specific place in my book where I state, "If you are in an abusive marriage, You need to get out as soon as possible."
There are also other good reasons for divorce. However most marriages end because the grass seems greener on the other side of the fence. Most couples compare their mates bad qualities to someone elses good qualities. They usually discover (too late) that everyone has bad qualities Just in different areas.
If you just don't seem happy any more, stick around. Happiness does return, especially if you get professional help. Keep in mind; if you can't afford professional help, there is no way you will be able to afford a divorce.
When you have children you are going to be connected to your spouse for the rest of their lives. Perhaps you can choose to be connected under the same roof.