The primary argument to retain the 1MB limit is that smaller blocks helps ensure decentralization of Bitcoin. Lots of people rightly care about this.
That was never a very good argument.
The 1 MB limit was originally an anti-spam measure, and since it was put in place the biggest proponents for keeping it there were altcoiners who wanted Bitcoin to stay crippled to leave room for them.
The loss of full nodes is due to a delay in the appearance of Bitcoin-native businesses. There's nothing wrong with the demands of running a full node being something that only power users/small businesses and up can handle.
Buying space in the Blockchain (through fees) only works if the amount of available space is limited. I hope we'll quickly run into the 1 MB limit and the limit is NOT increased, then we'll see transfer fees increase. Increasing the limit is the same as printing more fiat currency, the value of space in the Blockchain will tumble towards zero and therefore the fees will too undermining the long term viability of Bitcoin.
If the limit is increased I'm going to seriously consider to reduce my investment in Bitcoin significantly. When the limit is changed once it will be changed in the future as well as this will create a precedent. It's almost as bad as outright increasing the maximum number of Bitcoins from the current 21M maximum.