Doesn't holding my assets in joint names protect them from my creditors or from lawsuits?

In many states that designation will protect your assets fromt the creditors of one spouse.  But, if you are both sued, and a jusgment goes against you then those assets can be reached.  Also, those assets are not protected from mediciad (for long term care expenses).  Finally, joint  accounts with children and others may not be protected and in some states (including Pennsylvania), if the joint account holder dies you may be taxed on your own funds.