Let's put it this way. Assuming there are 4 scum, that leaves 5 town, one neutral left. So you've only got one chance to lynch today, because with a town mislynch, scum will get the final kill tonight. Or, if you lynch me instead, that still puts town back a day. You will still lose if you lynch me.
Or, you could vote for an actual scum read. Then with the night kill tonight, town would have to hit scum 3 days. But at least with me, you'll have the extra vote to go down the list. Eventually you're gonna hit mafia, it's just a matter of time.
My reasoning for siding with town is this. I don't know who scum is. I have no fucking clue. But I know that Burb is confirmed and I know Splinter is semi confirmed. More confirmed with Faddy's flip. It's a better bet for me to go with a sure thing than a what if.