This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Without Scriptlets jsp is :
easy to maintain.
it is doing the presentation task only.
you can take the example of legacy applications of any company where whole application is made in jsp only
if it require any minor change also, then it needs great efforts
there is no time issue except if you have not precompiled your jsp even this will give one time pain to application.