A bit sad, but not completely unexpected. For those of us born before the early 90s the only way to even see new toys was through television commercials, the Sears catalog (which only came out like once a year) and by taking a wondrous and magical trip to Toys R Us.
It's not like today where you can go on Amazon or any other online shop and browse through high resolution images of every and any toy imaginable and order right on a whim in your pajamas from the comfort of your own living room.
When I was a kid going to Toys R Us didn't even necessarily mean buying toys so much as just browsing, telling our parents what we were interested in and so forth. Of course even on these browsing trips we'd often get some inexpensive treat, but the real appeal was simply being able to wander up and down the aisles marveling at the incredible assortment of wants and wishes.
Toys R Us was like a magical place for us, a veritable candy land of colorful playthings waiting to be explored as we'd travel along the bright white, fluorescent lit flooring, drawn through the wonderland of endless entertainment and excitement.
It will be sad it goes away entirely, but with any luck their assets will be bought up by another company and it will continue to live on in some capacity. Much like how Mars bars are now called Snickers Almond and how Hostess and their Twinkies are now owned by Apollo Global Management.