Yep... you can adjust to clipless if you want. However, platform pedals are OK too:
1) great in winter or other situations where you might like to get off the pedals quickly.
2) great to use if you have multiple bikes, unless you can afford to outfit all of them with clipless pedals.
3) great if you are riding and walking.
4) great if you have a pair of good hiking shoes and don't want to spend any more money.