Absolutely! Remember, curtail is not synonymous with "eliminate."
You sound like a legislator...taxing is the most innefective way of curtailing activity..so according to you as we do now, TAXING INCOME SHOULD THEREFORE CURTAIL INCOME MAKING ACTIVITY..which is better, curtailing income or spending? Without an income tax, then people would (according to you)obviously strive to make more income and have more money to spend. I'd rather have all my money up front to make decisions with than have the govt take their chunk first and leave me with less to make decisons with...take the brakes off the economy from the billions spent on tax compliance and you will have a more efficient tax collection system and economy. Tax compliance is non-productive, its like digging a hole and filling it again every year..it produces nothing but a bunch of empty forests from all the papework...