Well if you want rational reasons for wanting to remain in the EU:

Euratom

Horizon2020

Erasmus

Our right of freedom of movement, resulting in fabulous opportunities for our young, or less young, people to work in Europe

Free movement of goods which results in the fabulous choice of quality continental products available in our shops.

Enhanced confidence in our country, in particular our currency.

EHIC

Hassle free travel

Rights to buy property in Europe

All positives, there are no negatives.

We are going to reclaim our sovereignty and remain in the EU.