The tennis shoes would be better than steel toe boots. If you are day hiking and not carrying a heavy load a good pair of sneakers is just fine.

If you plan on going on longer trips in wet environments over a couple of days with a heavier pack then a good pair of waterproof-breathable hiking boots would be a smart investment.

But try it out with what you have first to see if you like hiking before you spend money and discover you really hate it! <img src="/ubbthreads/images/graemlins/wink.gif" alt="" />