Houses come in many shapes and sizes and often we consider creating an open plan space or making the best use of what we have.
If you like entertaining and hosting then open plan option is for you, as this allows you to still socialise while cooking, if space allows you could have your hob on an island or peninsular for you to interact with your guests and still be involved.
Open plan spaces can also have zoned areas for family and friends, a place for doing homework while still interacting with one another.
Other rooms in your property would have you be functional and best use of space to meet whatever your requirements are maybe, if this is achievable then you will feel more comfortable and as ease in your home.