I love this topic every year......it means spring will be here soon (although this year Im a bit skeptical of that!)
Unless the people with the large refunds (of which I am one) are paying CC's interest (which I am not) --- which could be reduced if they received these $$'s during the year -- they arent really losing anything.
As others, have mentioned.....interest rates are less than 1% on a savings account/money market fund, so there is really no lost interest.
I have my emergency fund, IRA's, 10% + going to 401K.....this check is a way for us to do something in the spring without touching any existing funds. This year, it's redoing 2 rooms in our house. We also have car insurance & HOA fees due in March so getting the refund also goes straight to those bills as well.
To each there own and if it works for you that's all that matters....but please dont act as if you some how are better with your finances than me and the others just because you "dont give the government an interest free loan every year".