Someone said BTC takes WEEKS for transactions?  ha ha.
Bitcoin transactions are INSTANT with fees, and 1 hour, or 2 hour, or 3 hour if you select lower fees.
Fees are not high.
There is ZERO reason for BTC to change or update anything.  The Block size does NOT matter, NOR effect Transaction speed.

Smaller blocks move faster than larger BCH blocks.

Bitcoin has retail and developer support.
Bitcoin is accepted by overstock.com, godaddy.com 300,000 retailers in Japan.. etc etc etc etc etc.
BCH is accepted by NOBODY except crypto exchanges, and person to person. 

Bitcoin is accepted, BCH is not.
In fact, without Bitcoin, BCH has ZERO value because BCH is not even accepted on the black markets.