Yanky:
Admitted, I was getting my information from the kolmus article which says the reason is so we should not have the stringency of shabbos two days in a row.
I suppose you are basing yourself on gemara Rosh Hashana 20a. The gemara relates a machlokes why they used to sometimes make a 30 day elul. One reason is so they shouldn’t leave bodies unburied for two days, and the other is so the vegetable shouldn’t wilt.
Accordingly, chazal did care about having multiple days in a row with an issur melacha. Indeed, our religion is not the uncaring religion you make it out to be.