If a Harper-led majority worries you today, what makes you think "it won't be so bad"?
It's not like Harper doesn't have a track record of deceit and hypocrisy since 2006 - if that doesn't make you uneasy, it should. I still don't think he's being up front with Canadians about his agenda - the squirming base of theo-cons in that party speak otherwise, as does his explicit support of Ken Epp's terminally dishonest bill C-484.
If your heart is telling you that a Harper majority is a worry, then listen to it, and vote accordingly.
Ken Chapman has some interesting comments on Harper on his blog.