“My relationships begin well then I find out the person has a whole lot of baggage. If this continues I will be alone and never get married. Do you have any suggestions?”
There are worse conditions than singleness. If you do not believe me, ask any person trapped in a toxic marriage. To be lonely, and be married, must surely be far worse than being single and lonely.
Now to my suggestions: Next time you meet someone you’d like to date, demand a copy of his or her latest credit report, conduct an extensive interviews (in secret) with several of his or her former spouses or significant others, meet (in secret) with as many persons in his or her extended family as possible. Secure (secretively) and study a copy of his or her family tree. Insist on a full medical (try to talk to the doctor yourself). Having completed all of the above, and having found everything acceptable, agree to lunch in a well-lit restaurant. Drive separately.
To avoid all disappointment, remove all mystery and romance from your prospective relationship and, just to be sure, analyze everything to death. Then, if he or she sticks around, you (and I mean only you!) might have found yourself a winner.