Is up to the individual, right ? If you only surf the net, watch YouTube and few other apps, like checking bus timing, etc... then definitely.
if You want to cater for future, then get more. Also depends on how long you intend to use your phone. If you use it for 2 or more years, then one thing to note is that, even if you use the same apps, it gets slower. I think the apps get bigger over time as you update. Also as you update your OS, it tends to get slower, IMHO.
Can think along the line: How much ram is your current phone ? Do you like to install apps for fun ? Do you experience drag over time ? I think you get my point ?