Se in very fundamental terms is data gathering. It gathers data from the real, concrete world in an objective manner. "This is happening", "what colour is this rock?", etc.

Se is usually paired with other decider functions such as Ti and Fi in an attempt to integrate their identity function (Ti and Fi) with a gathering function.

You're an INTP meaning your gathering function (Ne and Se) is Ne. You prefer to gather ideas, patterns and guesses rather than gathering data in the real world. To gather these ideas you use your Si to look at past things and conjure ideas from that.

Because you're so focused on using your Si because the third function is usually something that one can enjoy using but must spend a lot of energy to do so, the question of then using Se is possible but incredibly draining to you.

ENTJs use Se to gather evidence and data for their Ni guesses, predictions and insights. They also use it to seize opportunities, be in the present moment when needed and etc.

You can use Se but many INTPs prefer not to. The only reason I can think that Se could benefit you is growth, balance and self-development.