Thank you.
Personally, I think mandatory voting is disrespectful of citizens. It infantilises them. I think citizens have the right not to vote. They do not have to be perfect model citizens.
Moreover, I think the current system offers an accurate picture of the situation. It might be depressing or negative, but at least we know how many people do not vote. Mandatory voting, apart from the fact that it is very difficult to enforce—we're not going to throw people in jail for not voting—can give an artificially positive picture of the situation.
In short, I am not in favour of mandatory voting. It seems desperate to me, forcing people to vote makes me angry. It would be unfair to citizens. To my mind, citizens are king. They can decide to vote or not. MPs will decide, but I don't think we should force citizens to vote.