You can answer this yourself by looking at historical charts of average fees and checking out how much congestion Bitcoin had historically.  The charts do not look good.

Bitcoin became more congested over the years as it grew.  It took longer to clear congested mempools, fees became higher and higher, people started paying to be put on a priority list by miners.  This was not SUPPOSED to happen but it unfortunately seems to get worse every halving.  Others can cope as much as they want, as long as this problem is not solved Bitcoin will become less interesting to many.  It becomes extremely annoying when you have to spend and the mempool is so clogged up your transaction has to wait hours or days and still require two to three fee upticks for it to finally go through.