Because statistically speaking, you're still being transported by one of the safest forms of transportation we have on an aircraft that has only had 5 (possibly 6) hull losses over millions of miles flying. Regardless of how well the IFE or Wi-Fi works, your aircraft has been maintained and held to rigid standards by the FAA (assuming you're flying a US-based carrier) and by an airline who knows that an accident would cost millions in equipment and future revenue.
To summarize, you're not a nervous flyer because you're rational
That being said, sorry you're on such a crappy plane.