You could always live together with a partner before deciding to get married or not.
Long enough to see if your relationship is better for it or not - or at least worth the troubles or boredom that's going to bring.
The way some of you are talking here is like you just take the woman on a few dates and then you go straight ahead and marry her. What are the chances for that to work I wonder
But when you live with someone for more then 6 months, sometimes much longer, you get to know the real person.
Not the one that you think she / he is, the
actual person. If you don't like what you see, just leave or demand the other person to leave, whatever the case might be. There is no alimony to pay, no goods to split, no mortgage etc ...
If it's all good, nothing is stopping you to plan your marriage, which has now much better chances to work. I am not saying it will work 100% because nothing is guaranteed in this world (other then dying
) but you will have actual real chances to never regret your doing.
Even if you decide not to get married, it doesn't matter much in this ideal compatible situation. Unless maybe a child comes along and you want to give the kid a proper family and a sense of security.