It's a pretty serious problem though and it's almost not even discussed anymore.      

Bitcoin needs room to grow, and 1MB limit is stopping it from growing.

This doesn't benefit anyone in bitcoin, not even the miners. Because more transactions means more fees, even if the fees per transaction might be a bit lower, the total amount of fees will be higher because there are more transactions to get fees from. And that's not even taking into consideration that with more transactions come more users, and with more users comes a higher price, and therefore more profit.

And people worrying about bitcoin getting more centralized if we get bigger blocks are not considering the fact that we have been sitting on 1MB for years now, and since that time internet has gotten cheaper and disk space has gotten cheaper as well. So we can easily increase the block size and we can do so again when we need to (and by that time, internet and disk space have become cheaper again). And on top of that we can find more efficient ways to manage the blockchain and transactions. As has been suggested in the whitepaper.

As long as the increase in blocksize is not too large at once it is fine. And it won't cause centralization at all. And even if the amount of nodes and miners goes down a little it won't matter, because there will still be plenty of different miners.

It's still better than having everyone run to altcoins because it is becoming impossible for bitcoin to grow the network and transactions are getting stuck.