I am! Remember, it's only a $150 fee because in January I'll get another $300 travel credit.
I travel a lot for work. Just in 2017 so far, I have fronted almost $20,000 of reimbursed travel expenses. I currently have a purchased ticket for an upcoming trip that I paid over $12,000 for (international, last-minute, business class, fully refundable). Then there is all of my reimbursable dining while on work trips, not to mention just the regular dining and travel I do on my own dime.
Compared to the Chase Freedom card ($0 annual fee, so $150 delta to be made up), keeping the CSR pays for itself it if you spend at least $4,266 per year on travel or dining.
Freedom: Spend $4,266 on travel or dining, you get $42.66 in travel redemption (1%).
CSR: Spend $4,266 on travel, you get $192 in travel redemptions (4.5% - 3% in points, and then a 50% bonus). That pays for the $150 fee.
Compared to the Preferred card ($95 annual fee, so $55 delta to be made up), keeping the CSR is worth it if you spend at least $2500 on travel or dining in a year.
CSP: Spend $$2,500 on travel or dining, you get $56.25 in travel redemption (2.25% - 2% in points, and then a 25% bonus).
CSR: Spend $2,500 on travel or dining, you get $112.50 in travel redemption (4.5%).
Note that this doesn't even look at the other perks of the CSR. I already have pre-check, so I don't value that at all. I "value" lounge access at about $7-9 per visit, because I get a free beer/wine and if I have that much time at the airport, I'd probably buy a drink at another airport bar to pass the time (mustachians who wouldn't pay that in the first place might not value it at all). It has great travel insurance; I got about $200 back after I was forced to stay an extra night in London due to an air traffic control strike in Greece, for example.