I wouldn't have phrased it quite like this but i think you have a point. I, like many others am a fence sitter.
Tories, Jesus Christ....
Labour, OMFG....
On one hand if you were a party that was Gods gift to politics then you are inheriting difficulty and you have a small budget to enact change, is that really realistic so in that sense does it matter who gets in. Even the good people will be just tinkering about and trying to make it look good and amazing.
When both main parties are pretty crap, inept, wrong, incompetent, then also does it matter who gets in.