I agree with that last part. It's actually something espoused by Barry Goldwater in his later years.
As for abortion, I'm personally against it for personal reasons but as Barry Goldwater also elaborated on, it's a matter of personal choice, not intended for government intervention. If it's a moral issue, then it's up to that person to square themselves with God, not for me to legislate their salvation or obedience.
But Christianity is not simply about abortion and homosexuality, it's just the 2 main issues that the religious right has used in an effort to wedge and divide people of faith. I'm more concerned about Christians adhering to Jesus' examples which IMO is something that should serve to better all of us (and especially the needier among us) rather than divide us.