Arsenic

So, I was thinking of that bacteria that lives off of arsenic and all the possibilities of life.  We've found that as long as there is water, no matter how extreme the environment is, life will exist there.  This arsenic thing has made a world of change.  It changes everything.  I mean scientist pretty much have to start from the beginning on where to look for life on other planets.  I mean, lets look at Titan and its massive amount of lakes of methane.  It's extremely harmful for us, but if bacteria can live off of arsenic, then what if there is a world of life in these lakes of methane?  I'm sure others have thought of this and will continue to expand.  I'm just some random person blogging about this because I want to.  I can't help but think of all the possibilities and doors that have been open where life might be.