Is it infinitely unlikely that we would share stuff like endogenous retroviruses which randomly insert into the host's genome, why we would share seven of the exact same retroviruses with chimps, bonobos etc.., inserted into the exact same location in the genome, out of 3 billion base pairs, if we didn't share a common ancestor?
There are also random mutations (redundant pseudogenes) that we share with chimps as well such as both having the GLO gene(which syntheses its own vitamin C) switched off which is why we have to ingest it.
Some would say the evidence for evolution is overwhelming for those who want to actually look for it.