I ask you two questions and you call that abuse?? Man, you've got a thin skin.
Re-read Matthew 1 and Luke 1 together...draw out a timeline of what's happening and you'll understand the context of the situation.
By our standards doesn't count in understanding their relationship.
I agree that in their culture they were considered to be married in everything but actual practice. That is clear from Matthew.
Matthew is clear they were living apart when Mary became pregnant. He is also clear they then completed the ceremony and began living as husband and wife.
Matthew is also clear they consummated the marriage after Jesus was born.
Having children would be keeping in line with God's command to be fruitful and multiply. With them being the godly people they were they followed through on this command.
The context is the key to the whole thing.
Huh?