For what it’s worth... (something I just found online)
Question: “What does the Bible say about being left-handed?”
Answer: The Bible presents the right hand as the hand of strength (Exodus 15:6; Psalm 118:16).
Sitting at someone’s right hand is considered a position of honor (Psalm 110:1).
The right hand is consistently valued over the left hand in Scripture (Genesis 48:13-18; Galatians 2:9).
What does this mean about left-handedness?
Is being left-handed considered a curse or a weakness?
No.
The Bible’s emphasis on “the right hand” is simply a reflection of reality.
The dominant arm is almost always stronger than the other arm, and 85-90 percent of people are right-handed.
So, in the vast majority of people, the right hand is stronger. Thus, the Bible uses the right hand as a symbol of strength and honor.
This does not carry any negative connotations for left-handed people. It is simply a matter of symbolism.
Whenever the Bible mentions left-handed people, it does not present left-handedness as a weakness.
Ehud, a judge of Israel and a mighty warrior, was left-handed (Judges 3:15-21).
Judges 20:16 mentions 700 left-handed warriors who could “sling a stone at a hair and not miss.”
First Chronicles 12:2 seems to reference bowmen who were ambidextrous.
When the Bible refers to left-handed people, it speaks of left-handedness as an advantage, not a weakness.
While it is not as honorable as sitting at someone’s right hand, sitting at the left hand is still a position of honor (Matthew 20:21).
Sitting immediately to a person’s left was considered the second-most honorable position.
It was not as if everyone to the right was more honored than those to the left.
The right hand is used in the Bible as a symbol of strength due to the right hand usually being stronger than the left.
This should not be understood as a slight against left-handed people.
http://www.gotquestions.org/Bible-left-handed.html
Muslims wipe with which hand? Left.
No, in todays western world, there is no reason to stigmatize left hand people. In the old world there were several. Hygiene amongst them.
Actually, if you are right handed the entire right side of your body is generally stronger than the left. Vice versa for lefties. When one gets serious about weight lifting they notice this quickly and it takes about a year to achieve a balance of strength between the sides. With some body parts you never achieve that balance.